This with the H9C and the 80ED with a .5FR, making an f/3.75 system of 300mm fl. Part of the reasonimg was that as I'd broken my guide camera, again, again, again, third time, I couldn't do much else other than take short frames so this was 82 frames of a mix of 20sec and 30sec.
You can see that the short frames didn't go deep enough to pick up the fainter nebulosity. The only way to crack this nut of such wide dynamic range is to take a mix of long, 300 to 600sec frames and a series of short, 10sec frames and layer them as Dave suggests.
M42 was a "fill in" job as I'd planned to work on a faint asteroid with the 14", but the poor drive of the Meade precluded frames longer than 10sec, so lots of 10sec frames. But the result wasn't showing any success, so I changed the plan. The sky was quite poor too with a very high wind rushing across the field, now less well protected by trees!
I was there today fielding comments and recounted to find we'd adjusted 12 trees that day. Possibly the growling the other night could have been the trees??
2 comments:
Could it be the Wererabbit?
What else could it be? Though the trapped ones thing it was the local Big Cat that lives in Bawtry forest!
Unless, of course, it was the dreaded Racoon.
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