Quote:
Originally Posted by multiweb
Sculptor in NB? That's interesting. I didn't think much would turn up. I quite like the colours you got. Nice guiding too.  |
I should be able to capture more details once I nail the dew issue on the primary and secondary mirror, would prefer to use the SW 80mmx400mm for the guide scope but HEQ5 Pro is having probs handling the weight.
Quote:
Originally Posted by Paul Haese
Eddie I have not tried using a dew strap on the outside of the RC. I have noted lately that I am getting some dew forming on the primary after 5 or so hours of imaging. I used a small strap around the secondary some time ago and found it to be more trouble that it was worth. It effective reduced the brightness of objects and made the spikes look a little weird so I took it off. In really dew ridden conditions the scope struggles with keeping it at bay. Looks like another suggestion for Jim sheng coming on. An internal dew heater for the secondary might work well. Not sure about the primary. The glass must be very thin to end up with dew on it, otherwise it would continue to release heat all night.
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I didn't think of checking the secondary because it points backward and down so another thing to look at, dew on the primary had me going for some nights thinking I had collimination probs.
Quote:
Originally Posted by Kal
Interesting. I can't recall ever seeing a galaxy imaged in NB before. The result you got is fantastic though, the dust lane features are very prominent. Well done and kudos for thinking outsode the square!  |
It's an interesting experiment.
Does anyone have any advise in using CCDInspector for collimination.
Cheers
Eddie