M38 in Auriga


Scope: C8  f/2.8 Location: Del Mar, CA   30 Nov. 2004  Camera: ToUcam SC3

Exposure: 9 x 50  sec and 24 x 25 sec and 24 x 9 sec Luminance Exposures  with IR  Block and Orion SkyGlo  filters.   16 x 20 sec RGB Exposures

Processing: Images were captured in K3CCDTools 2. Aligned/stacked in Registax 3 and saved as FITS. Luminance and Color channels were scaled and rough color balanced in Astroart. Channels were co-registered in Astroart.  The 25 sec IR was used to minimize some star bloating; the 50 sec IR exposure provided data on dimmer stars for star magnitude depth.  Luminance and Color FITS were combined in Photoshop with Luminance Layering. Color balancing and final touches in Photoshop. SGBNR (PixInsight LE) was used to smooth background noise on  Luminance channel as well as the final result. Image was resized to 800 x 600.

This image was taken at a light polluted  site - so the skyglo filter was used. This was a guided image. M38 is one of several Messier Open Clusters in Auriga and is often compared to its cousin M37 about 6 degrees away. M38 age  is estimated slightly younger at 220 million years; its distance is estimated at 4,200 light years.  Horizontal FOV is 30'



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