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Old 21-10-2008, 03:55 PM
Dennis
Dazzled by the Cosmos.

Dennis is offline
 
Join Date: May 2005
Location: Brisbane
Posts: 11,816
PN ngc246, Galaxies ngc1232 & ngc1365

Hello,

We’ve enjoyed a couple of clear nights with good seeing recently and I had the opportunity to use the C9.25 and ST7 to image a few DSO’s; Planetary Nebula NGC246 in Cetus, Galaxy NGC1232 in Eridanus and Galaxy NGC1365 in Fornax. The images were self guided using the dual chip of the ST7 (TC211). I had problems finding bright guide stars for the self guiding chip, so was only able to capture Luminance data – RGB filters would have swamped the faint guide stars.

The last quarter Moon was a bit of a challenge, but the relatively small size of the ST7 chip (756x510) meant that gradients weren’t a real issue.

C9.25 with F6.3 Reducer/Corrector.
NGC246. 10x5 minute subs.
NGC1232. 8x15 minute subs.
NGC1356. 6x10 minute subs.
ST7E CCD camera.

Thanks for looking.

Cheers

Dennis
Attached Thumbnails
Click for full-size image (NGC_246 Median A.jpg)
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Click for full-size image (NGC1232.jpg)
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Click for full-size image (NGC_1365.jpg)
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