Astro Anarchy

Monday, April 4, 2016

The last imaging project of the season, PuWe1

This is my last imaging project of the Spring season 2016. We'll lose astronomical darkness day after tomorrow for about six months due to high latitude, 65N.

PuWe1 is a very large and diffused planetary nebula in constellation Lynx. I think this is the first ever three channel narrowband image of it. This planetary nebula is extremely dim, I added single twenty minutes frames at end of the post to demonstrate, how little information there really is.

The data is collected between 16. February and 3. April. Total exposure time is around 23h. To boost the sensitivity of the camera, exposures are mostly shot binned between bin 2x2 and bin 10x10.

Final data is combined so, that high signal noise components, mostly stars, are from bin 1x1 data. Low signal elements are combined from heavily binned data.

There is a hint of outer halo visible in this image. It's extremely dim, especially with the focal length used. I have shot this object with much shorter focal length at Spring 2011. That was the first time I noticed the possible outer structure in this planetary nebula. I like to have this confirmed by some other imager. I will continue this imaging project at Spring season 2017.

PuWe1, planetary nebula in Lynx

Ra 06^h 19^m 34^s Dec +55° 36′ 42"

The photo is in mapped colors from the light emitted by an ionized elements,

red=sulfur, green=hydrogen and blue=oxygen.

PuWe1 in visual colors

Click for a large image

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.

INFO

PuWe1, (Purgathofer-Weinberger 1, PNG 158.9 + 17.8, PK 158+17.1) is a large circular Planetary Nebula in the constellation of Lynx. It has an apparent diameter of 20', without an outer halo seen in the image.

Messier 27 compared to PuWe1

Click for a large image

Note. An apparent size of the full Moon is marked as a white circle atop of the image.

Technical details

Processing work flow

Image acquisition, MaxiDL v5.07.

Stacked and calibrated in CCDStack2.

Deconvolution with a CCDStack2 Positive Constraint, 21 iterations, added at 25% weight

Color combine in PS CS3

Levels and curves in PS CS3.

Imaging optics

Celestron Edge HD 1100 @ f7 with 0,7 focal reducer for Edge HD 1100 telescope

Canon EF 200mm f1.8 camera optics (For S-II and O-III channels)

Mount

10-micron 1000

Meade LX200 GPS 12" (For S-II and O-III channels)

Cameras and filters

Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel

Guider camera, Lodestar x2 and SXV-AOL
QHY9 (For S-II and O-III channels)

Astrodon filter, 5 nm H-alpha

Baader filter, 8,5 nm O-III

Baader filter, 8 nm S-II

Exposure times

H-alpha, 30 x 1200s binned 2x2 =10h

O-III, 21 x 1200s binned 2x2 = 7h
O-III, 12 x 900s binned 10x10 = 3h

S-II, 9 x 1200s binned 10x10 = 3h

Total 23h

A single uncropped, calibrated and stretched 20 min. H-alpha frame as it comes from the camera, the data is binned 2x2

A single uncropped, calibrated and stretched 20 min. O-III frame as it comes from the camera, the data is binned 2x2

Thursday, March 31, 2016

The Lower's nebula in visual colors

I have published a photo of the Lower's Nebula in mapped colors about a week ago. Now I'm publishing the same nebula as a visual natural color version. Narrowband emission from hydrogen, oxygen and sulfur (H-a, O-III and S-II) are combined so, that the result is very close to a visual spectrum. Since the ionized hydrogen emits red light and it usually dominates nebulae, images are more or less red. Blueish hues are from ionized oxygen, O-III. Sulfur, S-II, emits red too and it get mixed to a hydrogen emission visually.

Lower's Nebula
Click for a large image

Image is in natural colors from the light emitted by an ionized elements, sulfur, hydrogen and oxygen.

The mapped color version of Lower's nebula can be seen HERE

INFO

The Sh2-261 (Sharpless 261), also known as the Lower's Nebula, is a faint region of doubly ionized hydrogen. Its apparent dimension is about 50 arcminutes in East-West direction and 30 arcminutes in North-South. So, it has an apparent size about twice the full Moon diameter. Of course the real size of the nebula is much larger! But we have no information about the distance of this hydrogen cloud, so we are not able to determine how large it is. (Source, www.skyfactory.org)

Technical details

Processing work flow

Image acquisition, MaxiDL v5.07.

Stacked and calibrated in CCDStack2.

Deconvolution with a CCDStack2 Positive Constraint, 21 iterations, added at 25% weight

Color combine in PS CS3

Levels and curves in PS CS3.

Imaging optics

Celestron Edge HD 1100 @ f7 with 0,7 focal reducer for Edge HD 1100 telescope

Mount

10-micron 1000

Cameras and filters

Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel

Guider camera, Lodestar x2 and SXV-AOL

Astrodon filter, 5nm H-alpha

Astrodon filter, 3nm O-III

Astrodon filter, 3nm S-II

Exposure times

H-alpha, 9 x 1200s =3h

O-III, 3 x 1200s binned = 1h

S-II, 3 x 1200s binned = 1h

Total 5h

A single uncropped, calibrated and stretched 20 min. H-alpha frame as it comes from the camera

Wednesday, March 30, 2016

Supernova remnant Sharpless 224 in auriga

The imaging season up here 65N starts to be over soon, in a week we'll be out of astronomical darkness for about six months. This photo of dim supernova remnant in constellation Auriga is one of the last images for the Spring season 2016.

Sharpless 224 in visual colors
Click for a large image

Sh2-224 in mapped colors
Click for a large image

The photo is in mapped colors from the light emitted by an ionized elements,

red=sulfur, green=hydrogen and blue=oxygen.

INFO

Supernova remnant Sharpless 224, Sh2-224, locates in constellation Auriga at distance of about 14700 light years. It has an apparent size about 60 arc minutes, the real size is around 235 light years. This is a very dim target and lots of exposure time is needed to reveal any details out of it. Beside Hydrogen alpha, there are also weak emission from ionized oxygen, O-III, and ionized sulfur, S-II.

Wide field images of the area
Click for a large photo, 1800 x 1500 pixels, 3MB

This photo is from March 2009. QHY9 astrocamera, Canon EF 200mm f1.8 camera lens and Baader narrowband filters. Total exposure time is around 15h. Original photo with technical details can be seen HERE

12 panel mosaic of constellation Auriga
Click for a large photo, 2600 x 1200 pixels, 5MB

Mosaic image is from March 2012. This panoramic mosaic spans about 21 degrees of sky.
That's 42 full Moons side by side. QHY9 astrocamera, Canon EF 200mm f1.8 camera lens and Baader narrowband filters. Total exposure time is around 70h. Original photo with technical details can be seen HERE

Technical details

Processing work flow

Image acquisition, MaxiDL v5.07.

Stacked and calibrated in CCDStack2.

Deconvolution with a CCDStack2 Positive Constraint, 21 iterations, added at 25% weight

Color combine in PS CS3

Levels and curves in PS CS3.

Imaging optics

Celestron Edge HD 1100 @ f7 with 0,7 focal reducer for Edge HD 1100 telescope

Canon EF 200mm f1.8 camera optics (For S-II and O-III channels)

Mount

10-micron 1000

Meade LX200 GPS 12" (For S-II and O-III channels)

Cameras and filters

Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel

Guider camera, Lodestar x2 and SXV-AOL
QHY9 (For S-II and O-III channels)

Astrodon filter, 5 nm H-alpha

Baader filter, 8,5 nm O-III

Baader filter, 8 nm S-II

Exposure times

H-alpha, 24 x 1200s binned 2x2 =8h

O-III, 12 x 600s binned 4x4 = 2h (Year 2009)

S-II, 12 x 600s binned 4x4 = 2h (Year 2009)

Total 12h

A single uncropped, calibrated and stretched 20 min. H-alpha frame as it comes from the camera

Saturday, March 26, 2016

A new photo, Sharpless 124, an emission nebula in constellation Cygnus

I shot the lights for this target at January 6. 2016 The data wasn't very good due to weak transparency and a poor seeing at the time. I got this processed just now and the result is much better, than I thought it might be.

There are very few photos and scientific information out of this rarely imaged target. It locates in constellation Cygnus at estimated distance of 8400 light years. Total exposure time for my photo is only seven hours. I will continue with this target at next Autumn, hopefully with better atmospheric conditions.

Sharpless 124, Sh2-124

Ra 21 38 17 Dec +50 19 48

The photo is in mapped colors from the light emitted by an ionized elements,

red=sulfur, green=hydrogen and blue=oxygen.

Sharpless 124 in visual colors

Sharpless 124, in H-alpha emission only

Technical details

Processing work flow

Image acquisition, MaxiDL v5.07.

Stacked and calibrated in CCDStack2.

Deconvolution with a CCDStack2 Positive Constraint, 21 iterations, added at 25% weight

Color combine in PS CS3

Levels and curves in PS CS3.

Imaging optics

Celestron Edge HD 1100 @ f7 with 0,7 focal reducer for Edge HD 1100 telescope

Mount

10-micron 1000

Cameras and filters

Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel

Guider camera, Lodestar x2 and SXV-AOL

Astrodon filter, 5nm H-alpha

Astrodon filter, 3nm O-III

Astrodon filter, 3nm S-II

Exposure times

H-alpha, 15 x 1200s =5h

O-III, 3 x 1200s binned = 2h

S-II, 3 x 1200s binned = 2h

Total 7h

A single uncropped, calibrated and stretched 20 min. H-alpha frame as it comes from the camera

H-alpha data was binned 2x2

Thursday, March 24, 2016

A new image, the Lower's nebula

We now have had few clear nights after having a solid cloud cover for over two months. Transparency and seeing were poor at most of the time though. I managed to collect some data for two imaging projects. The Lower's Nebula was the first one. This is a dim and rarely imaged emission nebula in constellation Orion. There are not too many photos out of this one and it was difficult to collect information about it. Total exposure time is only 5h, I will continue this project at spring season 2017.

Lower's Nebula

The photo is in mapped colors from the light emitted by an ionized elements,

red=sulfur, green=hydrogen and blue=oxygen.

INFO

Technical details

Processing work flow

Image acquisition, MaxiDL v5.07.

Stacked and calibrated in CCDStack2.

Deconvolution with a CCDStack2 Positive Constraint, 21 iterations, added at 25% weight

Color combine in PS CS3

Levels and curves in PS CS3.

Imaging optics

Celestron Edge HD 1100 @ f7 with 0,7 focal reducer for Edge HD 1100 telescope

Mount

10-micron 1000

Cameras and filters

Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel

Guider camera, Lodestar x2 and SXV-AOL

Astrodon filter, 5nm H-alpha

Astrodon filter, 3nm O-III

Astrodon filter, 3nm S-II

Exposure times

H-alpha, 9 x 1200s =3h

O-III, 3 x 1200s binned = 1h

S-II, 3 x 1200s binned = 1h

Total 5h

A single uncropped, calibrated and stretched 20 min. H-alpha frame as it comes from the camera

Wednesday, March 16, 2016

4D video of the Veil Nebula SNR

The weather up here 65N has been cloudy for months. I played with my older images and made couple of experimental 3D animations out of them. Here is the first one, the Veil Nebula SNR in Cygnus. This is actually a 4D animation since it shows the time too... I made this just for fun, this is not an accurate model of reality but close enough for me.

4D video of the Veil Nebula supernova remnant

Click to start and stop the movie

Watch in Youtube, HD 1080p: https://www.youtube.com/watch?v=kWt9BqAtyKI

Original 2D image of the Veil Nebula can be seen here:
http://astroanarchy.blogspot.fi/2013/12/veil-nebula-unveiled.html

Monday, March 14, 2016

Astro Anarchy gets published, exhibition in Mikkeli Center of Photography

10.3.-8.4.2016
Sali: J-P. Metsävainio
Studio I: Christelle Mas
Studio II: Johannes Wilenius
Studio III: Aira Lång

An ongoing exhibition in Mikkeli, http://www.en.mikkelinvalokuvakeskus.fi/

I have about twenty large aluminium prints at display.

A closeup of NGC 1499, the California Nebula, 100 x 100 cm aluminium print

Some of my astronomical shots. Image credits, Johannes Wilenius

Monday, February 29, 2016

IC 410 as a cinemascope format photo

I have worked with a cinemascope format movie from my photos for a movie theater presentation. This is an extra wide ~21:9 format used in theaters. The actual film is not ready yet but I have some of my images converted to this ultra wide format. I think they will look great at a large movie screen! I'll publish some of individual panoramic format photos here, images are downscaled for the web.

IC 410, a "Cosmic Fertilization"
Be sure to click for a full resolution image, ~2600 x 1200 pixels

Image details can be seen HERE

A wide field photo of the constellation Auriga
Be sure to click for a full resolution image, ~2600 x 1200 pixels

The area of IC 410 photo, at top of the page, is marked with a white regtangle.
Image details can be seen HERE

Previously published sets of cinemascope format astro images

http://astroanarchy.blogspot.fi/2016/02/bubble-nebula-as-cinemascope-format.html

http://www.astroanarchy.blogspot.fi/2016/02/cirrus-of-cygnus-as-cinemascope-format.html

http://www.astroanarchy.blogspot.fi/2016/02/filaments-of-cygnus-in-cinemascope.html

http://www.astroanarchy.blogspot.fi/2016/02/a-dramatic-panorama-of-ic-1805-heart.html

http://www.astroanarchy.blogspot.fi/2016/02/two-high-resolution-cinemascope-format.html

http://www.astroanarchy.blogspot.fi/2016/02/more-high-resolution-cinemascope-format.html

http://www.astroanarchy.blogspot.fi/2016/02/high-resolution-cinemascope-format.html

http://www.astroanarchy.blogspot.fi/2016/02/cinemascope-format-panoramas-from-my.html

http://www.astroanarchy.blogspot.fi/2016/02/i-have-worked-with-cinemascope-format.html

Friday, February 26, 2016

Bubble Nebula as a cinemascope format photo

Bubble Nebula in Cassiopeia
Be sure to click for a full resolution image, ~2600 x 1200 pixels

Image details can be seen HERE

A wide filed photo
Click for a full size photo

The area of the panoramic photo can be seen as a white rectangle. Note the size of the full Moon is marked as a white circle at lower right corner for a scale. The Moon has an angular dimension of 30 arc minutes, that's about 0,5 degrees of sky. Image details can be seen HERE

Wednesday, February 24, 2016

Cirrus of Cygnus as a cinemascope format photo

Cirrus of Cygnus
Be sure to click for a full resolution image, ~2600 x 1200 pixels

Image details can be seen HERE

Orientation in Cygnus
Please, be sure to click for a full resolution image, ~2300 x 1500 pixels, ~4MB

Image details can be seen HERE.
Note, a size of the full Moon is marked as scale in the lower right corner.
The Moon has an apparent diameter ~30 arc minutes, that's about 0,5 degrees of sky.

Previously published sets of cinemascope format astro images

http://www.astroanarchy.blogspot.fi/2016/02/filaments-of-cygnus-in-cinemascope.html

http://www.astroanarchy.blogspot.fi/2016/02/a-dramatic-panorama-of-ic-1805-heart.html

http://www.astroanarchy.blogspot.fi/2016/02/two-high-resolution-cinemascope-format.html

http://www.astroanarchy.blogspot.fi/2016/02/more-high-resolution-cinemascope-format.html

http://www.astroanarchy.blogspot.fi/2016/02/high-resolution-cinemascope-format.html

http://www.astroanarchy.blogspot.fi/2016/02/cinemascope-format-panoramas-from-my.html

http://www.astroanarchy.blogspot.fi/2016/02/i-have-worked-with-cinemascope-format.html

Tuesday, February 23, 2016

Filaments of Cygnus in cinemascope format

I have worked with a cinemascope format movie for a movie theatre presentation from my photos. This is an extra wide ~21:9 format used in theaters. The actual film is not ready yet but I have some of my images converted to this ultra wide format. I think they will look great at a large movie screen! I'll publish some of individual panoramic format photos here, images are downscaled for the web.

Filaments of Cygnus x 3

Please, be sure to click for a full resolution images, ~2600 x 1200 pixels