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Old 19-07-2008, 11:30 PM
Alchemy (Clive)
Quietly watching

Alchemy is offline
 
Join Date: Jul 2007
Location: Yarra Junction
Posts: 3,044
scorpius emission nebula 6357

been a while since any imaging can be done here in Melbourne, this image was taken back on 4th july.

Have had some issues with flexure in the system, my current suspisions are centred on the focuser (gso 10.1) as its not a premium job. have since relocated and tied the cabling so as to not apply and inadvertant pressure as it moves...... if the weather clears i will find out if i was right, perhaps an upgrade to a JMI event horizon focuser may help ????...feel free to make sugestions

Anyway the technical details

Mount Losmandy G11
Scope 12 inch f5 newtonian
Guiding PHD 1 sec updates, .5 sidereal 20% aggression, through ED80
Camera QHY8
Exposures 17 x 6 min

also added m20 shot the same night... only 6 or 7 exposures due to trailing of stars so its a bit gritty.

thanks for looking
Clive
Attached Thumbnails
Click for full-size image (NGC-6357-4th-july.jpg)
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Click for full-size image (M20-blended-1.jpg)
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