Hemisphere:  Northern  ·  Constellation: Leo (Leo)  ·  Contains:  NGC 2903  ·  NGC2903  ·  NGC2905
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NGC 2903, 



    
        

            Andrew Barton
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NGC 2903

Getting plate-solving status, please wait...
NGC 2903, 



    
        

            Andrew Barton
Powered byPixInsight

NGC 2903

Imaging telescopes or lenses: Stellarvue SVX 130T

Imaging cameras: ZWO ASI 294MM Pro

Mounts: AstroPhysics Mach1 GTO

Guiding telescopes or lenses: Orion Short Tube 80

Guiding cameras: Lodestar

Software: PixInsight  ·  Main Sequence Software Sequence Generator Pro  ·  Open PHD Guiding PHD2 Guiding 2.6.2

Filters: Astrodon GREEN 31mm - Gen2 E-Series Tru-Balance  ·  Astrodon BLUE 31mm - Gen2 E-Series Tru-Balance  ·  Astrodon RED 31mm - Gen2 E-Series Tru-Balance

Accessory: MoonLite NiteCrawler WR35  ·  Alnitak Flip-Flat  ·  Starlight Xpress filter-wheel 7x1,25"


Dates:Feb. 6, 2021Feb. 7, 2021Feb. 9, 2021

Frames:
Astrodon BLUE 31mm - Gen2 E-Series Tru-Balance: 111x180" (5h 33') (gain: 120.00) -20C bin 1x1
Astrodon GREEN 31mm - Gen2 E-Series Tru-Balance: 112x180" (5h 36') (gain: 120.00) -20C bin 1x1
Astrodon RED 31mm - Gen2 E-Series Tru-Balance: 114x180" (5h 42') (gain: 120.00) -20C bin 1x1

Integration: 16h 51'

Avg. Moon age: 25.44 days

Avg. Moon phase: 19.08%


Astrometry.net job: 4259146

RA center: 9h 32' 8"

DEC center: +21° 30' 1"

Pixel scale: 0.518 arcsec/pixel

Orientation: -89.886 degrees

Field radius: 0.517 degrees


Resolution: 5796x4249

Locations: Duquesne, Pategonia, Arizona, United States

Data source: Own remote observatory

Remote source: Non-commercial independent facility

Description

NGC 2903 is a barred spiral galaxy in Leo located about 30 million light years from the Milky Way.

This target was a test of the bin 1 mode of the ASI 294mm camera. The default mode is an internal bin 2, but ASI unlocked the bin 1 mode after I purchased it. When using the bin 1 mode you give up 1 stop of dynamic range according to a SharpCap analysis (at gain 120), but you go from 4.6um to 2.3um pixels. At 4.6um, I am just a little under sampled and at 2.3um, I am over sampled. Under ideal seeing, this camera offers the possibility for doing high resolution galaxy imaging on medium focal length scope. Unfortunately, the condition for this image were not as ideal as I would like. Still, I felt the experiment was a success.

The next thing I will try with this camera is imaging with a subframe at bin 1. Full 94MB subframes are a killer to deal with considering processing time, storage and moving data from my remote observatory to home.

Comments

Revisions

  • NGC 2903, 



    
        

            Andrew Barton
    Original
  • Final
    NGC 2903, 



    
        

            Andrew Barton
    C

C

Description: I realized the image on astrobin was over over exposed compared to my local working copy. I had a temporary adjustment (PixInsight - STF) in place on my local copy that was not saved. This version more represents what I was going for.

Uploaded: ...

Sky plot

Sky plot

Histogram

NGC 2903, 



    
        

            Andrew Barton

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Arizona Astrophotographers