Hemisphere:  Northern  ·  Constellation: Leo (Leo)  ·  Contains:  NGC 2903  ·  NGC2903  ·  NGC2905
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9th Magnitude NGC 2903 Behind Haze, 



    
        

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9th Magnitude NGC 2903 Behind Haze

Getting plate-solving status, please wait...
9th Magnitude NGC 2903 Behind Haze, 



    
        

            astropical
Powered byPixInsight

9th Magnitude NGC 2903 Behind Haze

Imaging telescopes or lenses: Celestron C8 XLT 2032mm F/10

Imaging cameras: Nikon D5500

Mounts: Orion Atlas EQ-G

Guiding telescopes or lenses: ZWO Guidescope 30mm F4

Guiding cameras: ZWO ASI120MC-S

Software: PHD2 Guiding  ·  Fitswork Ver 4  ·  Deepsky Stacker  ·  Photoshop CS2


Dates:March 8, 2021

Frames: 37x120" (1h 14') ISO1600

Integration: 1h 14'

Avg. Moon age: 24.68 days

Avg. Moon phase: 24.33%

Temperature: 21.00


Astrometry.net job: 4295965

RA center: 9h 32' 16"

DEC center: +21° 27' 48"

Pixel scale: 0.395 arcsec/pixel

Orientation: -87.427 degrees

Field radius: 0.352 degrees


Resolution: 5600x3150

Locations: Balcony, Okinawa, Japan

Data source: Backyard

Description

Thin haze and 80% humidity. Only overcast would have been worse. Anyway, finally wanted to point the C8 at a galaxy (still without reducer). Almost all individual frames show ghost stars (revision B), probably because of the DSLR shutter shock in spite of 1 second delay set (or mount error, 120 sec at FL=2000mm is a lot), but stacked them anyway because I didn't have that many lights. The stars don't look that bad. Image is dithered and 10% cropped. No calibration applied.

On a positive note, the PHD2 (multi-star) autoguide graph was almost flat in spite of the small 30mm/120mm guide scope. Would have been a nice image without haze. Promising after all.

Comments

Revisions

  • 9th Magnitude NGC 2903 Behind Haze, 



    
        

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    Original
  • Final
    9th Magnitude NGC 2903 Behind Haze, 



    
        

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    C

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9th Magnitude NGC 2903 Behind Haze, 



    
        

            astropical