Showing posts sorted by relevance for query QHY8. Sort by date Show all posts
Showing posts sorted by relevance for query QHY8. Sort by date Show all posts
Thursday, August 4, 2011
The "Heart Nebula", IC 1805, reprocessed
Since my processing technique gets better and the time of year doesn't give any support, I have reprocessed some older images. There is now star colors added and other processing is tweaked too.
Wide field shot of IC1805 with the "Soull Nebula", IC1848
HST-palette, (HST=Hubble Space Telescope)
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Natural color composition from the emission of ionized elements, R=80%Hydrogen+20%Sulfur, G=100%Oxygen and B=85%Oxygen+15%Hydrogen to compensate otherwise missing H-beta emission. This composition is very close to a visual spectrum.
IC 1805, Sharpless 190 (Sh2-190) in Cassiopeia
Ra 02h 32m 36s Dec +61° 29′ 2″
HST-palette, (HST=Hubble Space Telescope)
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
The "Heart Nebula", IC1805 locates about 7500 light years away in constellation Cassiopeia. This is an emission nebula showing glow of ionized elements in a gas cloud and some darker dust lanes.
In a very center of the nebula, lays Melotte 15, it contains few very bright stars, nearly 50 times mass of our Sun, and many dim ones. The solar wind, a radiation pressure, from massive stars makes the gas twist to a various shapes.
Natural color composition from the emission of ionized elements, R=80%Hydrogen+20%Sulfur, G=100%Oxygen and B=85%Oxygen+15%Hydrogen to compensate otherwise missing H-beta emission. This composition is very close to a visual spectrum.
The "Heart of the Heart, Melotte 15
HST-palette, (HST=Hubble Space Telescope)
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Natural color composition from the emission of ionized elements, R=80%Hydrogen+20%Sulfur, G=100%Oxygen and B=85%Oxygen+15%Hydrogen to compensate otherwise missing H-beta emission. This composition is very close to a visual spectrum.
The scale in a sky, a zoom in series
NOTE. The size of the full Moon (0,5 degrees) is marked as a gray circle in all of the images.
Images used in the series above from top to bottom
A wide field image from 2008. with a Canon FD 200mm f2.8 camera lens and a QHY8, a cooled astronomical camera with a H-alpha and UHC-s filters. Total exposure time ~2,5h
A wide field image of the area, covering about 5 degrees, ~300', of the sky. (Ten full Moons side by side)
IC 1805, the "Heart Nebula", locates at upper Right and IC 1848 can be seen at lower Left. Image is shot with a Canon EF 200mm f1.8 camera lens and a QHY9, a cooled astronomical camera.
Baader narrowband filter set, total exposure time was ~1,5 hours (A very fast lens was used!).
A medium wide field shot with a Sky Watcher 80ED f7.5 telescope and QHY8 astronomical camera + UHC-s filter. Total exposure time ~3,5h
Last image was shot with a Meade LX200 GPS 12" telescope @ f6,5 and a QHY8, a cooled astronomical camera with a H-alpha and UHC-s filters. Total exposure time ~7h.
Technical details
and here:
I have used some material from my wider field images for colors and some dimmer details.
Monday, December 31, 2007
Images from Autum 2007 part II
California nebula
ED80 + QHY8, guiding LX200+QHY5 UHC-filter 4h+flats+bias
Heart nebula, IC1805
ED80 + QHY8, guiding LX200+QHY5 UHC-filter 4h+flats+bias
IC 1396 ED80 + QHY8, guiding LX200+QHY5
UHC-filter 5h+flats+bias
Sunday, September 23, 2012
My equipment
I'm shooting my astronomical images from downtown Oulu. This is my collection of gears needed for my astroimaging. Canon EF 200mm camera lens can't be seen in images here.
This is a new combination from old gears. Now I'm able to shoot with two cameras at ones! QHY9 is used for longer focal length work with my old Meade LX200 GPS 12" telescope at about f5. QHY8, a cooled single shot color imager, is used with Tokina AT- X 300mm camera lens for wide field work.
Now I can have both, a closeup and a wide filed images, from same target at same time. I'll test, if color information from QHY8 camera can be used with images taken by QHY9 camera.
As you can see, I don't have any fancy gears for my work.
Not a pretty boy...
Lots of cords. They might look unorganized but I can sure you, there is a system.
Light path from the telescope to camera. There is an active optics unit at middle. (SXV-AO)
Counterweight, Meade fork mount and the dew heater control box at right.
The other side of the scope.
The ugly yellow fabric, at top, works as an insulation for the
heater stripe at front of the QHY8 camera. It's heated due the frost.
Images taken with Meade LX200 GPS 12" telescope
Sunday, March 24, 2013
Jones-Emberson 1, a Palnetary Nebula
I have shot some new h-alpha data for this extremely dim planetary nebula. Total exposure time is now around 20h for the light emitted by an ionized Hydrogen alone. Colors are shot simultaneously with H-a by using the Tokina AT-X 300mm f2.8 camera optics, UHC-sfilter and a cooled single shot color astrocamera, QHY8. Exposure time for the color information is around 8h. Total exposure time used is ~23h.
NOTE!
An unknown outer shell structure might be visible in my color data! It can be an artifact though and much more exposures are needed to show it well enough to be sure. Explanation at the end of this post.
Jones-Emberson 1
Ra 07h 57m 51.628s Dec +53° 25′ 16.96
PK 164+31.1 a planetary nebula in Lynx
A cropped full size image, this is a large object as a planetary nebua.
Image is in visual spectrum and dominated by the red light emitted by ionized Hydrogen, H-alpha. Blueish hues are from ionized Oxygen, O-III. Colors are shot simultaneously with H-a emission by using QHY8 color camera, Tokina AT-X 300mm f2.8 camera lens and Baader UHCs-filter.
NOTE. An updated image, 5h of O-III data added 25.03.
NOTE. An updated image, 5h of O-III data added 25.03.
A wider field
NOTE. An updated image, 5h of O-III data added 25.03.
INFO
There are many background galaxies in this image but they are not showing very well, due to narrowband imaging method. Galaxies and stars are broadband targets and they dim down much, when narrowband filters are used. I'll like to be able to shoot this from a dark location with a LRGB-method.
largish and very dim, planetary nebula.PK 164+31.1, sometimes known as a "Jones-Emberson 1" has an angular diameter of 6', 67" x 6', 67" and it locates in constellation Lynx. Distance from my home town Oulu, Finland, is about 1600 light years.
The tiny Blue central star is a white dwarf, the intense ultraviolet light emitted by this star makes elements in a ring glow. Ionized Hydrogen emits red light and the ionized Oxygen blue one.
Why the name "PK 164+31.1"?
PK comes from the names of Czechoslovakian astronomers Perek and Kouhutec. 1967 they created an extensive catalog of all of the known planetary nebulae in 1964. The number indicates the position in the sky. The alternative name "Jones-Emberson 1" is after its discoveries.
Jones-Emberson 1, H-alpha emission alone
Image shows this planetary nebula in light emitted by an ionized Hydrogen, H-alpha. In color image, there is also light from an ionized Oxygen, O-III. (H-a emits red light and O-III green/blue light.)
Technical details
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Levels, curves and color combine in PS CS3.
Optics, Meade LX200 GPS 12" @ f5
Camera, QHY9
Guiding, SXV-AO, an active optics unit, and Lodestar guide camera 5Hz
Image Scale, ~0,8 arc-seconds/pixel
Exposures
H-alpha 21x1200s, binned 1x1 = 8h (A new set from spring 2013)
(Older sets from Spring 2010)
H-alpha 32x1200s, binned 2x2 and 7x1200s, binned 3x3 = 13h
O-III 2x600s, binned 4x4 and 1x1200s, binned 4x4 = 1h
S-II 3x600s, binned 4x4 and 1x1200s, binned 4x4 = 1h 20min.
+
Color exposures with QHY8 single shot color camera, spring 2013
48x600s exposures with UHC-sfilter = 8h
48x600s exposures with UHC-sfilter = 8h
A single unprocessed 1200 second frame of H-a emission
A single 20 min. frame, just calibrated and nonlineary stretched to visible.
Imaged with the QHY9 camera, Baader 7nm H-alpha filter and Meade LX200 12" telescope.
Color data
This is a image used for colors only, it doesn't need to be high resolution, nor pretty, since there are very litle details in other than H-a channel.
A UHCs filtered data from Tokina AT-x 300mm f2.8 camera lens, total 8h.
Possible finding, an outer shell?
After removing all the stars from the color image above, I was able to stretch the individual color channels to an extreme, without blowing the stars. It is possible, that there is an unknown outer shell in this nebula!
It's possible, that this is just an artifact and much more exposures are needed to show it well enough to be sure. This season starts to be over up here 65N but I'll continue to study this at next spring season, 2014.
A very strongly stretched starless color image of Jones-Emberson 1, 8h exposure, shows a hint of an outer shell structure at mostly Right side at the image above. Outer shell seems to be a pure O-III emission and that's kind of typical to a many planetray nebulae. But as mentioned, this is speculation until I have more data.
Wednesday, March 27, 2013
Jones-Emberson 1, the project continues
The Jones-Emberson 1, project continues. I shot five more hours of O-III (light emitted by an ionized Oxygen.) to this planetray nebula. The area of O-III seems to be more extended, than most of the images around are showing.
At previous mail, I wrote about a possible outer halo in this PN. I have not collected enough information to confirm it, even though I shot five more hours with my fast imaging system, Tokina AT-X 300mm f2.8 lens, UHCs-filter and QHY8 camera. It's very much possible, that there is nothing after all but we'll see at end of the next season, spring 2014.
Generally the new O-III data gives a softer look to this extremely dim planetary nebula. The total exposure time is now ~36h, with wide field color data.
Jones-Emberson 1
Ra 07h 57m 51.628s Dec +53° 25′ 16.96
PK 164+31.1 a planetary nebula in Lynx
Buy a photographic print from HERE
A cropped full size image, this is a large object as a planetary nebua.
Image is in visual spectrum and dominated by the red light emitted by ionized Hydrogen, H-alpha. Blueish hues are from ionized Oxygen, O-III. Some of the colors are shot simultaneously with H-a emission by using QHY8 color camera, Tokina AT-X 300mm f2.8 camera lens and Baader UHCs-filter.
A wider field
Buy a photographic print from HERE
INFO
There are many background galaxies in this image but they are not showing very well, due to narrowband imaging method. Galaxies and stars are broadband targets and they dim down much, when narrowband filters are used. I'll like to be able to shoot this from a dark location with a LRGB-method.
largish and very dim, planetary nebula.PK 164+31.1, sometimes known as a "Jones-Emberson 1" has an angular diameter of 6', 67" x 6', 67" and it locates in constellation Lynx. Distance from my home town Oulu, Finland, is about 1600 light years.
The tiny Blue central star is a white dwarf, the intense ultraviolet light emitted by this star makes elements in a ring glow. Ionized Hydrogen emits red light and the ionized Oxygen blue one.
Why the name "PK 164+31.1"?
PK comes from the names of Czechoslovakian astronomers Perek and Kouhutec. 1967 they created an extensive catalog of all of the known planetary nebulae in 1964. The number indicates the position in the sky. The alternative name "Jones-Emberson 1" is after its discoveries.
Five hours of new O-III data
Shot at 25.03. 2013
Five hours of new O-III data
Shot at 25.03. 2013
This image shows an example about my processing technique. I'm using a special technique of mine to dig out a very weak signal. The upper image shows a stacked, calibrated and heavily stretched 5h exposure of an O-III light. The image below shows the same data after star removing procedure . The signal from the ionized oxygen is then stretched much more and smoothed out by using a median filtering, 5x5, and some gaussian blur.
Technical details
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Levels, curves and color combine in PS CS3.
Optics, Meade LX200 GPS 12" @ f5
Camera, QHY9
Guiding, SXV-AO, an active optics unit, and Lodestar guide camera 5Hz
Image Scale, ~0,8 arc-seconds/pixel
Exposures
H-alpha 21x1200s, binned 1x1 = 8h (A new set from the spring 2013.)
(Older sets from Spring 2010)
H-alpha 32x1200s, binned 2x2 and 7x1200s, binned 3x3 = 13h
O-III 2x600s, binned 4x4 and 1x1200s, binned 4x4 = 1h
O-III 15x1200s, binned 1x1, = 5h (A new set from the spring 2013.)
O-III 15x1200s, binned 1x1, = 5h (A new set from the spring 2013.)
S-II 3x600s, binned 4x4 and 1x1200s, binned 4x4 = 1h 20min.
+
Color exposures with QHY8 single shot color camera, spring 2013
48x600s exposures with UHC-sfilter = 8h
48x600s exposures with UHC-sfilter = 8h
A single unprocessed 1200 second frame of H-a emission
A single 20 min. frame, just calibrated and nonlineary stretched to visible.
Imaged with the QHY9 camera, Baader 7nm H-alpha filter and Meade LX200 12" telescope.
Color data
This is a image used for colors only, it doesn't need to be high resolution, nor pretty, since there are very litle details in other than H-a channel.
A UHCs filtered data from Tokina AT-x 300mm f2.8 camera lens, total 8h.
Monday, December 31, 2007
Images from autum 2007
Veil nebula, Eastern part.
ED80 + QHY8, guiding LX200+QHY5
UHC-filter 2h+flats+bias
Veil nebula, Western part.
ED80 + QHY8, guiding LX200+QHY5
UHC-filter 4h+flats+bias
Tuesday, March 19, 2013
Sharpless 261, the "Lower's Nebula"
This starts to be my final images for this season. We'll be out of an astronomical darkness in couple of weeks, up here 65N.
Difficult target just above the Orion, I have spent three night trying to collect enough photons to have a nice image. Sh2-261 doesn't rise very high up here, so I have only around three hours per night to shoot this.
I manged to collect five hours of H-a light and six hours UHCs-filtered colors. 11h total exposure time is not too much for this object.
Sharpless 261 (Sh2-261) , the Lower's Nebula
Image is in visual spectrum and dominated by the red light emitted by ionized Hydrogen, H-alpha. Blueish hues are from ionized Oxygen, O-III. Colors are shot simultaneously with H-a emission by using QHY8 color camera, Tokina AT-X 300mm f2.8 camera lens and Baader UHCs-filter.
INFO
SH2-261, or Lower's Nebula, is a Hydrogen Alpha emission region located in the upper area of Orion, near the Gemini constellation. Image covers about a same area as a full Moon. There is no information about the distance of this hydrogen cloud, so we are not able to determine how large it is.
The nebula is named after amateur astronomers Harold Lower and his son Charles, who discovered this nebula in 1939 from a picture taken with their homemade 8 inch, f/1 Schmidt camera.
Image in Hydrogen alpha light alone
Technical details
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Levels, curves and color combine in PS CS3.
Optics, Meade LX200 GPS 12" @ f5
Camera, QHY9
Guiding, SXV-AO, an active optics unit, and Lodestar guide camera 7Hz
Image Scale, ~0,8 arc-seconds/pixel
15 x 1200s exposures for the H-alpha, emission of ionized Hydrogen = 5h
+
Color exposures with QHY8 single shot color camera
36x600s exposures with UHC-sfilter = 6h
36x600s exposures with UHC-sfilter = 6h
Wednesday, April 9, 2008
The Learning Curve
The term learning curve refers to a relationship between the duration of learning or experience and the resulting progress. Initially introduced in cognitive psychology, over time the term has acquired a broader interpretation, and expressions such as "experience curve", "improvement curve", "cost improvement curve", "progress curve"/"progress function", "startup curve", and "effeciency curve" are often used interchangeably, depending on the context. Some of these terms may also have other meanings.
-
(Above text is borrowed from Wikipedia)
_
This image serie is example of my leraning curve with the Galaxy M51.
-
All the images are taken with same optics, LX200 GPS 12".
-
The oldest one, 2005, is taken with Canon 300D, in Alt/Az
Image from 2007 is taken with QHY8.
Latest image is taken with QHY8 and SXV-AO, active optics.
-
The impact of imaging conficuration is not as big as
impact of the improved processing skills.
Tuesday, May 24, 2011
IC 410 & 405, the scale in a sky, zoom in series
I have shot many targets with several focal lengths.
Due that, I will publish some older images as an image sets, with different field of view and detail levels.
The fractal nature of our universe stands out nicely by this way and it will make the orientation more easy.
Many times, it's difficult to understand the image scale of astronomical images.
Due that, I will add a Moon circle in some of the images to show the angular scale in a sky.
The full Moon has an angular size of ~30 arc minutes, that's equal to ~0,5 degrees.
The full Moon
IC410
An emission Nebula in constellation Auriga
An emission Nebula in constellation Auriga
NOTE. The size of the full Moon (0,5 degrees) is marked as scale.
Three images are used for the series.
First is a wide field shot with a Canon FD 200mm f2.8 camera lens.
First is a wide field shot with a Canon FD 200mm f2.8 camera lens.
Second image, is imaged with a Tokina AT-X 300mm f2.8.
Third image is done with a Meade LX200 GPS 12" reduced little under 2000mm.
Third image is done with a Meade LX200 GPS 12" reduced little under 2000mm.
Baader narrowband filter set was used with all images, wide field images was shot with a QHY8 and closeup with QHY9, both are cooled astronomical cameras.
Original images with technical details
1. First wide field shot:
http://astroanarchy.blogspot.com/2008/03/ic-405-410-with-color.html
2. Second wide field shot:
http://astroanarchy.blogspot.com/2008/03/ic-405-410-with-color.html
2. Second wide field shot:
3. A closeup of IC 410:
IC405
An emission Nebula in constellation Auriga
Images are in Natural color palette from the emission of ionized elements, R=Hydrogen + Sulfur, G=Oxygen and B=Oxygen + Hydrogen.
NOTE. The size of the full Moon (0,5 degrees) is marked as scale.
Three images are used for the series.
First is a wide field shot with a Canon FD 200mm f2.8 camera lens.
Second image, is imaged with a Tokina AT-X 300mm f2.8.
Third image is done with a Meade LX200 GPS 12" reduced little under 2000mm.
Baader narrowband filter set was used with all images, wide field images was shot with a QHY8 and closeup with QHY9, both are cooled astronomical cameras.
Original images with technical details
1. First wide field shot:
2. Second wide field shot:
3. A closeup of IC 405:
EDIT.
I found an older image of IC 405 & 410 from my HD, it's shot back in Winter 2008. I added it as a part of zoom in series.
Monday, October 17, 2011
IC 1396, the home of the "Elephant's trunk Nebula"
IC 1396
In constellation Cepheus
HST-palette, from the emission of ionized elements,
R=Sulfur, G=Hydrogen and B=Oxygen.
At the same night, 16. October, I shot my previous target, I had some time left before dawn.
I shot few frames, 6x1200s, of H-alpha for IC 1396. Last time I shot this target, I was using a HY8 single shot color astronomical camera. As it's a color camera, bayer matrix cuts down the effective resolution about 1/4 of the native resolution of CCD. I wanted to test, how visible this difference is.
Older image of IC 1396 can be seen HERE. The difference in resolution is impressive, stars are much tighter now. i did use O-III and S-II channels from this older image to build color compositions. (Resolution of those channels doesn't have any effect to my final image, since I'm using my "Tone Mapping" technique.
IC 1396 spans hundreds of light years at distance of about 3000 light years in constellation Cepheus. The famous formation of glowing gases, the "Elephant's Trunk Nebula" can be seen at six a clock position.
This is an active star formation region and it has several massive young stars inside of it, coursing the ionization of elements in this emission nebula.
I have made a study about the apparent size in a sky:
R=Hydrogen + Sulfur, G=Oxygen and B=Oxygen + Hydrogen.
Older, longer focal length, closeup image of the "Elephant's trunk Nebula"
http://astroanarchy.blogspot.com/2011/01/elephants-trunk-nebula-inside-ic-1396.html
Technical details:
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Levels, curves and color combine in PS CS3.
Optics, Tokina AT-X 300mm camera lens at f2.8
Camera, QHY9 , a cooled astronomical camera
Guiding, Meade LX200 GPS and the Lodestar guider
Image Scale, ~3,5 arcseconds/pixel
Exposures H-alpha 6x1200s, binned 1x1
(S-II and O-III are borrowed from an older image)
O-III 8x1200s, binned 2x2, QHY8
S-II 3x1200s, binned 2x2, QHY8
Friday, June 3, 2011
Panoramic mosaic from the M52 & Bubble to Wizard Nebula
While making scale studies from various objects, I did make some new panoramas from archived images.
I will publish some of them as an individual images, comments and suggestions are welcome.
Panorama, from M52, Bubble Nebula & Sh2-157 to the Wizard Nebula
In constellation Cassiopeia
A panorama from the M52 to the Wizard Nebula in constellation Cassiopeia.
Image is in HST-palette from an emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Natural color composition from the emission of ionized elements, R=80%Hydrogen+20%Sulfur, G=100%Oxygen and B=85%Oxygen+15%Hydrogen to compensate otherwise missing H-beta emission. Star colors are mixed from the NB channels, Red=H-a, G=O-III and B= 85%O-III + 15%H-a.This composition is very close to a visual spectrum.
Note. Size of the full Moon is marked as a gray circle, at lower Left corner, for a scale.
There are two individual images used to make this panoramic image:
- Sharpless 157, http://astroanarchy.blogspot.com/2011/03/sh2-157-reprocessed.html
- Wizard Nebula, http://astroanarchy.blogspot.com/2011/02/sh2-142-wizard-nebula-wide-field.html
Sh2-157 Imaging data:
Camera, QHY8 -
Filters, Baader 7nm H-alpha, Baader 8,5nm O-III and Baader 8nm S-II -
Optics, Tokina AT-X 300mm @ f2.8 -
Exposures, 5X 1200s H-alpha, 2 X 1200 O-III and 2X1200s S-II + flats and bias -
Guiding, LX200 GPS 12" + PHD-guiding and Lodestar
Wizard Nebula, Sharpless 142, NGC7380 Imaging data:
Camera, QHY8 -
Filters, Baader 7nm H-alpha, Baader 8,5nm O-III and Baader 8nm S-II -
Optics, Tokina AT-X 300mm @ f2.8 -
Exposures, 10X 1200s H-alpha, 2 X 1200 O-III and 2X1200s S-II + flats and bias -
Guiding, LX200 GPS 12" + PHD-guiding and QHY5
Labeled version
Friday, March 29, 2013
Owl nebula, Messier 97
This seems to be my last image for the winter season 2013.
M97, the Owl nebula
in constellation Ursa Major
Click for a large image.
Image is in visual spectrum, red light is emitted by an ionized Hydrogen, H-alpha. Blueish hues are from ionized Oxygen, O-III. Some of the colors, like stars, are shot simultaneously with H-a emission by using QHY8 color camera, Tokina AT-X 300mm f2.8 camera lens and Baader UHCs-filter.
INFO
In my image the outer shell of ionized Oxygen, O-III, can be seen around the round nebula. It's very rarely imaged, I found just couple of images, taken with large 2-3 meter telescopes, showing it. I did use my "Tone Mapping" technique to dig out this very faint signal.
The Owl Nebula, M97, is located about 2,600 light-years away toward the bottom of the Big Dipper's bowl. M97, from Messier's list of objects, its round shape along with the placement of two large, dark "eyes" do suggest the face of a staring owl. One of the fainter objects in Messier's catalog, the Owl Nebula is a planetary nebula, a dying sun-like star as it runs out of nuclear fuel. In fact, the Owl Nebula offers an example of the fate of our Sun as it runs out of fuel in another 5 billion years. The nebula spans over 2 light-years.
A drawing of Owl Nebula from 1848
I wanted to place this sympathetic image here, It's a drawing of Owl nebula by William Parson back from 1848.
O-III channel processing
to show the outer shell structure
Click to see large image
- Calibrated and stretched stack, 8h of exposures.
- Stars are removed by using several iterations of "dust and scratches" filter under PhotoShop.
- Levels are set.
- First iteration of curves.
- Second iteration of curves, second set of "dust and scratches" filtering to remove background unevenness, mild gaussian blur and some median filtering (5x5) to reduce noise level
- Finally image number 5 is combined with second image from top to have both, core details and the outer halo.
Technical details
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Levels, curves and color combine in PS CS3.
Optics, Meade LX200 GPS 12" @ f5
Camera, QHY9
Guiding, SXV-AO, an active optics unit, and Lodestar guide camera 4Hz
Image Scale, ~0,8 arc-seconds/pixel
Exposures from three different nights, 16., 26. and 29.03 2013
H-alpha 18x1200s, binned 1x1 = 6h
O-III 24x1200s, binned 1x1 = 8h
+
Color exposures with QHY8 single shot color camera and Tokina AT-X 300mm f2.8 lens.
36x600s exposures with UHCs-filter = 6h
Subscribe to:
Posts (Atom)
