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Wednesday, February 27, 2019

Sharpless 132 (Sh2-132)

My first photo for the Spring season 2019, Sharpless 132 in Kefeus.
Generally the start of the year 2019 has been very cloudy up here 65N. This four panel mosaic image has been taken between 1.1. and 11.2. 2019. Total exposure time is around 30h.

Sharpless 132 in Kefeus
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Image is in mapped colours, from the emission of ionized elements, R=Sulphur, G=Hydrogen and B=Oxygen. The signal for ionized oxygen,.

An experimental starless version
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When stars are removed, the actual shape of the nebula is easier to see.

A closeup
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Closeup of the central region of Sharpless 132.

Sharpless 132 is a very faint emission nebula, it locates at the border of Cepheus and Lacerta. Distance is about 10.000 lightyears. My photo covers about four square degrees of the sky. The blue color in the image is from the emission of an ionized Oxygen (O-III).

Technical details

Processing workflow

Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 33 iterations, added at 50% weight
Color combine in PS CS3
Levels and curves in PS CS3.

Imaging optics
Celestron Edge HD 1100 @ f10 with 0,7 focal reducer for Edge HD 1100 telescope

10-micron 1000

Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x 2 and SXV-AOL

Astrodon filters,
5nm H-alpha 3nm S-II and 3nm O-III

Total exposure time for all of the four panels

H-alpha, 48 x 1200 s, binned 2x2 = 16 h
O-III, 24 x 1200 s, binned 4x4 = 8 h.
S-II, 18 x 1200 s. binned 4x4 = 6 h

Tuesday, January 15, 2019

Astro Anarchy gets published

I have been chosen to receive a recognition in astrophotography by the Universo Mágico / Magical Universe, www.universomá

Wednesday, January 2, 2019

All my photos from the year 2018

A poster format collection of my photos from the year 2018. The Spring season 2018 was very cloudy, the Autumn season 2018 was kind of good and I was able to finalize couple of long imaging projects.

All my photos are taken with my current setup, the main instrument is an excellent imaging scope Celestron EDGE HD 1100 with a 0.7 focal reducer from Celestron. That's simply a best reducer I have ever used!  (Some optical testing can be seen HERE)
The mount from 10-micron is a top performer too. All images are taken with Apogee Alta U16 astronomical camera and Astrodon narrowband filter set, H-alpha 5nm, S-II 3nm and O-III 3nm.

I do purely narrow band imaging since my observatory is located at downtown of the City Oulu.
So far the light pollution has been massive in this industrial city with about 200 000 inhabitants but it used to be mostly from narrowband light sources, like old sodium and mercury lamps. Now the most of the light sources have been updated to LED-technology and it makes the light pollution much worse, since LEDs are emitting light at full spectrum. The broad band light from LEDs is practically impossible to filter out. I need to find a new location to my observatory during the Summer season 2019.

All my photos from the year 2018
Click for a full size image it's worth it (3000 x 5500 pixels)

Image details

  1. Dark nebulae of NGC 7000,
  2. Bow Tie of LBN 251,
  3. Gian Cosmic Squid, Au4,
  4. Clouds of Swan,
  5. The Cygnus Shell, W63, NASA APOD, a supernova remnant,
  6. LBN 239 and 243,
  7. Clouds of Cygnus,
  8. North America and the Pelican nebula,
  9. LBN 243,
  10. The Sky on Fire,
  11. Sharpless 224,
  12. A detail of IC 1396,
  13. Sharpless 157,
  14. Sharpless 188,

Monday, December 10, 2018

Astro Anarchy gets published, the cover picture of an Official Vatican Observatory calendar 2019

My photo of the Sharpless 115 (Sh2-115) and a planetary nebula Abell 71 get selected as a cover photo of an Official Vatican observatory Calendar for the year 2019.

A Square Degree of Birth and Death

This photo shows  about one square degree of sky from the constellation Cygnus. In this photo, there are both, birth and the death. 
The blueish area at middle up is a stellar nursery, new stars are born there as an ongoing process. 
The blue dot at lower left is a planetary nebula Abell 71. The star has consumed all of its hydrogen resources and then blowed out its outer layers.

Sharpless 115 and Abell 71
Please, click for a large image

Image is in mapped colours, from the emission of ionized elements, R=Sulphur, G=Hydrogen and B=Oxygen.

More info about this photo