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Old 27-10-2015, 06:35 AM
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pmrid (Peter)
Ageing badly.

pmrid is offline
 
Join Date: May 2008
Location: Cloudy, light-polluted Bribie Is.
Posts: 3,765
Venus and Jupiter in the east

I didn't expect to get any opportunity to shoot this. We had some pretty wild weather here last night with more forecast for today. So I didn't set anything up ahead of time. I should know by now.

So when my wife nudged me at 4 this morning and said the sky was clear, I had to stagger out and open the obs before (a) the sun came up; (b) the fog rolled in.

All I had available and that would take in the two planets in one frame was an old Orion 4" achromat with a IR modified 350D attached (inside a cooler box). The camera is set up for long exposures using BEOS so I couldn't quickly pull the cooler apart and allow myself to take short sub-second exposures (BEOS limits you to 1 second subs) so I dropped down to 100ISO and did a short run of 25 frames.

Registax 6 wouldn't recognise the CR2 format so I couldn't stack that way. CCD Stack wouldn't recognise them either and DSS would only stack one frame. So all in all it has not been my finest moment.

However, here is a single-frame stack with bias and no darks. Taken on the verge of daylight and one step ahead of the eastern clouds, rising mist and residual moonlight.

But I did get an image - honest!!

Peter
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