Hemisphere:  Northern  ·  Constellation: Lacerta (Lac)  ·  Contains:  NGC 7243  ·  PGC167749  ·  PGC167753  ·  PGC167755
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NGC 7243, 



    
        

            Gary Imm
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NGC 7243

Getting plate-solving status, please wait...
NGC 7243, 



    
        

            Gary Imm
Powered byPixInsight

NGC 7243

Imaging telescopes or lenses: Orion EON 130mm ED Triplet APO

Imaging cameras: ZWO ASI1600MM-Cool

Mounts: Astro-Physics Mach1GTO

Guiding telescopes or lenses: Orion 60mm Guidescope

Guiding cameras: Orion StarShoot AutoGuider Pro Mono

Focal reducers: Orion 3" Field Flattener

Software: Main Sequence Software Sequence Generator Pro

Filters: Astrodon Green 31mm Gen2 I-Series  ·  Astrodon Blue 31mm Gen2 I-Series  ·  Astrodon Red 31mm Gen2 I-Series

Accessory: ZWO EFW  ·  Feathertouch Focuser Boss II Electronic Focusing Control


Dates:Nov. 26, 2017

Frames:
Astrodon Blue 31mm Gen2 I-Series: 20x60" (20') (gain: 139.00) -15C bin 1x1
Astrodon Green 31mm Gen2 I-Series: 20x60" (20') (gain: 139.00) -15C bin 1x1
Astrodon Red 31mm Gen2 I-Series: 20x60" (20') (gain: 139.00) -15C bin 1x1

Integration: 1h

Avg. Moon age: 7.20 days

Avg. Moon phase: 48.10%


Astrometry.net job: 1846831

RA center: 22h 15' 18"

DEC center: +49° 52' 9"

Pixel scale: 0.851 arcsec/pixel

Orientation: 89.846 degrees

Field radius: 0.577 degrees


Resolution: 4256x2394

Locations: Backyard (Mag 20.8 - Bortle 4.5), Onalaska, Texas, United States

Data source: Backyard

Description

In my opinion, astrophotography requires great faith in the process. By this I mean that, while taking subs or performing the initial processing, the target often appears so faint and ill defined that it doesn't seem possible that a great image could result. But, putting aside that doubt and completing the image, something wondrous almost always happens, as if by magic, to make the image come alive. Except in a few cases. This is one of those cases.

This object is a large sparse open cluster located 2800 light years away in the faint northern constellation of Lacerta. It contains about 40 stars. The stars are primarily whitish-blue with a few orange members.

The outline of the cluster is not obvious to me. In fact, a 1999 paper studying this object concluded that there was no strong evidence for a cluster and that the number of stars present does not exceed the expected background count. I hate to say it, but this object to me does not merit a Caldwell designation. There are too many other wonderful objects in the sky which could have been included instead. But, I have tremendous respect for Mr. Moore and his list, so I will just assume that I am not seeing this object in its full glory.

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NGC 7243, 



    
        

            Gary Imm