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Old 22-04-2014, 02:57 PM
Dennis
Dazzled by the Cosmos.

Dennis is offline
 
Join Date: May 2005
Location: Brisbane
Posts: 11,823
Jewel Box & NGC 6300 at 1728mm focal length

Last night I used the Mewlon 180 F12 with Tak x0.8 Reducer/Flattener and SBIG ST2000XM to record the Jewel Box and NGC6300 at a longish focal length of 1728mm.

The Mewlon is a slowish ‘scope, even at F9.6 and the ST2K doesn’t have the highest QE, so the combination really struggled on NGC 6300 (ESO 101 25, PGC 60001) a Magnitude 11, Barred Spiral Hubble Type: SBb Galaxy located in Ara, with an apparent size of 5.5'x 3.5'.

I only managed 12x5mins Lum and 3x5 mins each RGB on NGC6300which is woefully inadequate for this galaxy from the light polluted suburbs of Brisbane. The Jewel Box was L 20x3 mins and RGB 5x3 mins each.

Both images are 1024x768 crops from the 1600x1200 originals.

Cheers

Dennis
Attached Thumbnails
Click for full-size image (Jewel Box LRGB 1024.jpg)
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Click for full-size image (NGC 6300 LRGB 1024 A.jpg)
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