Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
Contains:  Bode's nebulae, M 81, NGC 3031
Getting plate-solving status, please wait...

Messier 81 Closeup

Technical card

Imaging telescope or lens:RCOS 14.5"

Imaging camera:SBIG STX 16803

Mount:Paramount-ME

Guiding telescopes or lenses:

Guiding cameras:

Focal reducers:

Software:Adobe Photoshop CCPixInsight for Mac

Filters:Astrodon luminance filterAstrodon RGB

Accessories:


Resolution: 7192x6592

Dates:Jan. 31, 2017

Frames:
Astrodon luminance filter: 25x1200" -25C bin 1x1
Astrodon luminance filter: 47x900" -25C bin 1x1

Integration: 20.1 hours

Darks: 0

Flats: 0

Flat darks: 0

Bias: 0

Avg. Moon age: 3.51 days

Avg. Moon phase: 13.28%

Bortle Dark-Sky Scale: None

Mean SQM: None

Mean FWHM: None

Temperature: None


Basic astrometry details

Astrometry.net job: 1484099

RA center: 9h 55' 34"

DEC center: +69° 3' 50"

Pixel scale: 0.275 arcsec/pixel

Orientation: 133.514 degrees

Field radius: 0.373 degrees


Locations: Deep Sky West, Rowe, New Mexico, United States

Description

This LRGB image contains a lot of information, hard to handle. As a test, trying to collect some comments. This is an in-process work. More data will be collected.

Version C is a drizzled version, but didn't see significant improvement in details.

Version D has a manual color adjustment of blue turned down by 5% based on non-structural color calibration (PixInsight jargon, meaning balance color channels based on an area of interest).

Comments

Author

mileszhou
Miles Zhou
License: None (All rights reserved)
3635
Like

Revisions

B

Description: Added Ha. Noise is not under well control. More revision may come.

C

Description: Drizzled

D

Description: Color adjustment

Sky plot

Sky plot

Histogram

Messier 81 Closeup, 



    
        

            Miles Zhou

In these public groups

Members of Deep Sky West