Astral Imaging at Dogwood Ridge Observatory

Latitude: 37°48'51.0" N"
Longitude:78°23'41.0"W
Scottsville, Virginia 24590

 

(click on thumbnails to go to that image's page)

 

 

 

 

   

NGC7023
The Iris Nebula

Image Information

The Iris Nebula, cataloged as NGC7023, is a reflection nebula located in the constellation Cepheus about 1,300 light years distant from us. The reddish glow seen in the central filaments are dust grains that effectively convert the star's invisible ultraviolet radiation into visible red light. The Iris Nebula is about 6 light years across.

 

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This image is compiled from luminance data of 10 - 10 minute subs, 40 - 5 minute subs and 25 - 1 minute subs. The attempt here was to minimize the damage done by the central magnitude 7.4 star. The RGB color data are all taken at 1x1 binning with the same goal in mind but all are 10 minutes subs at 8 each. No matter the processing, each image appeared to be noisy regardless of the amount of data and method of combining the data. One thing I did have to keep in mind is that with this image, the entire area is in nebulosity.

Equipment and Location Information

Date August 4-6, 2006
Location Dogwood Ridge Observatory
Optics OGS10" RC @ f/6.2 using the AP .67x Reducer
Mount Astro Physics AP1200GTO guided using AP Guide scope and remote head
Camera SBIG ST10XME w/ Remote Guide Head
Conditions Temperature ranging from middle 80's to mid 60's with extremely variable seeing. Transparency good.

    
  Last Modified :01/23/09 03:40 AM