The same night I got the California nebula data with the mini-WASP array, I also got some earlier Double Cluster data with the array, and, some M33 deep data with the Hyperstar III. The Hyperstar was using 20-minute subs for the M33 image – that’s deep!! That’s the equivalent of 1 hour and 40-minute subs with the Sky 90 or 3 hours and 20-minute subs with the TS 80s. Noel processed this deep M33 image just last night and will add it to our earlier efforts on this one.
The Double Cluster image is the lower half of a 2-frame mosaic. The upper frame will make Stock 2 the subject and hopefully I will provide Noel with enough frame overlap to be able to bolt the two images together. As you can see – stars – lots of stars 🙂
I have a hyperstar, C11 edge and QHY12 and am just starting to image at f/2.
I was interested that see that you are using very long (20 min?) exposures on DSOs and still getting good (ie non-saturated) star images. Is my understanding correct?
Dear Geoff – I have used sub-exposures up to 40-minutes with some objects in order to go deep. The core of stars is always going to be blown at these exposure times but you can usually always grab some colour back from the very outside edge of the star. Noel Carboni’s “Star Spikes Pro” tool helps you to do this. Regards – Greg.
Thanks for that. Unfortunately my PS is on Mac OSX and apparently Noel’s plugin is only for Win machines.