Archive for the “CCD Images” Category

CCD Astrophotography Images

Last night I managed to get 10 x 10-minute subs using the Sky 90 array on the Cygni 32 region.  Pretty amazed that I could see some nebulosity with so few (shallow) subs.  Anyway – main point of the exercise was to get the two Carbon stars just above Cygni 32 and about equidistant apart from it.  These are U Cygni (on the left) and SV Cygni (on the right).  I combined some earlier HSIII data on just U Cygni with the Sky 90 data for this result.

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A while back I asked for submissions to run a deep-sky image of the week from this site. The response was not good. In which case I will post up a deep-sky image of the week from my own collection. I’ll kick off with this recent very wide field of the Cocoon region taken with the 2 x Canon 200mm lenses and the Trius M26C OSC CCDs.

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Having swapped out the Master Computer and mucked around a bit with Sky 90(1) I had some clear sky last night to take some test shots to see what needs fine tuning.  This image is just 12 x 5-minute subs with the array.  I now know that I need to very slightly flatten the Sky 90(1) chip and I need to re-align Sky 90(2) and Sky 90(3) to Sky 90(1).  Then the Sky 90 array will be ready for the new season.  The Canon 200mm DSLR array is of course fine and needs no attention!!  I wish now that I had built the whole array out of Canon 200mm lenses – live and learn 🙂

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Noel Carboni recently processed the 22-hours of data from the Sky 90 mini-WASP array.  This data comprised 15 and 20-minute sub-exposures.

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I have only just stacked ALL the data on this one from late 2014.  This is 69 subs using 15.20-minute exposures for a total of 22-hours on this one.

The Sky 90 array on the mini-WASP. f#4.5 3 x Sky 90s and 3 x M26C OSC CCDs.

 

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Beautiful clear Moonless night last night but we only get astronomical darkness starting around 11 p.m. so it’s a late start at this time of the year (and darkness ends around 3 p.m. so you don’t get many hours of darkness either).  I saw some nice contrasting red and blue stars in Draco using a planetarium program, and as a bonus I could also get NGC 4236 (Caldwell 3) in the frame as well – a barred spiral galaxy.  This image is 30 x 10-minute subs taken with the Sky 90 array on the mini-WASP.  When I packed up for the evening there was Saturn near Antares in the south, and quite high up in the sky there was Lyra and Cygnus, so summer is clearly not far away 🙂  All in all a superb night’s imaging.

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12 frames using the Hyperstar III and M25C camera with 2-hours of 10-minute subs per frame.  Also a 200mm lens with M26C camera 2-framer using 15-minute subs and 5 hours per frame.  So total integration time is 34 hours 🙂

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Turned out rather noisy for 30 x 1,000 second subs with the Sky 90 array.  Not sure why as there was no Moon about.  Maybe I forget to turn the Peltiers on??  Need to redo this one with the Hyperstar III.

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4 hours of 10-minute subs from last year with the Sky 90 array.  Akira Fujii effect.

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The Sky 90 array was set on this object to see if I could pick up the 3 quasars near this galaxy.  No sign!! A day later I put the Hyperstar III on the same region but only got 4 x 10-minute subs 🙁  Possible sign of one of the quasars, but no sign of the other two – not a fair test however.  Below is the Noel Carboni process of the Sky 90 data.

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