Hemisphere:  Northern  ·  Contains:  Flaming Star nebula  ·  IC 405
Getting plate-solving status, please wait...
IC 405, 


            Alf Jacob Nilsen
IC 405
Powered byPixInsight

Technical card

Imaging telescopes or lenses: GSO RC 254/2000 Carbon OTA

Imaging cameras: Nikon D850

Mounts: iOptron CEM60-EC

Guiding telescopes or lenses: Skywatcher EvoGuide 50ED

Guiding cameras: Starlight Xpress Lodestar 2

Focal reducers: TS Optics TSRCFLAT2 1,0X flattener for RC

Software: Astro Pixel Processor APP  ·  Adobe Photoshop CC  ·  PixInsight Core Version 1.8 Ripley

Filters: IDAS (Tokai) LP-filter

Accessory: Optec TCF-S

Dates:Feb. 23, 2020

Frames: 84x300"

Integration: 7.0 hours

Avg. Moon age: 29.41 days

Avg. Moon phase: 0.02%

Basic astrometry details

Astrometry.net job: 3276329

RA center: 5h 16' 18"

DEC center: +34° 19' 22"

Pixel scale: 2.340 arcsec/pixel

Orientation: 79.407 degrees

Field radius: 0.491 degrees

Resolution: 1200x919

Locations: Osmundstø Observatorium (private backyard observatory), Hidrasund, Vest Agder, Norway

Data source: Backyard


After weeks of rain, it surprisingly cleared on the evening of Feb 23rd and I could continue to test Nikon D850 and TS-Optics 1,0X flattener for RC-scopes. I could also complete the image session of the Flaming Star Nebula (IC 405) that I had selected as a test object for the scope- and camera configuration.

The final image shown here is a 7 hrs RGBG image (84x300sec, iso800), cropped and processed. I am pleased with the result, but although the camera is mounted in the correct distance (109 mm) from the flattener, there is still a significant amount of vignetting although the field is much wider and flatter than without the device.

I also try to learn how to use the basic processing tools in PixInsight and have a long way to go still. For this image, I need to reduce the noice even more..... :(




Alf Jacob Nilsen
License: None (All rights reserved)

Sky plot

Sky plot


IC 405, 


            Alf Jacob Nilsen