Lovely Image Doug. Question, how do you get -18 deg C on the 40D you must have ambient at around zero or just below at Hahndorf. The Central DS 40D modded is only supposed to do around 18deg below ambient. Mine is rarely lower than 15deg below ambient.
Lovely Image Doug. Question, how do you get -18 deg C on the 40D you must have ambient at around zero or just below at Hahndorf. The Central DS 40D modded is only supposed to do around 18deg below ambient. Mine is rarely lower than 15deg below ambient.
Hi Pete,
That's what the crappy temp sensor tells me - not too sure if I trust it, but it seems to be accurate enough with regard to the ambient air temp.
From day one this Astro 40D has dropped consistently over 20ºC if the temp sensor is to be believed. I got my 40D done around the time Yun was bringing out the cooled 5D MkII which I think cools to 28ºC below ambient but that cooling unit looks like a different beast altogether!
Perhaps Central DS have upped the cooling unit's efficiency - but I tend to think its probably the cheapo thermometer misreading.
Happy with it and the results though.
Cheers
Doug
Very nice Doug. So much detail and so much to look at in this image.
Well done.
Thanks Doug - I admit to being a bit overwhelmed by the amount of data in this image. Hard to keep it all under control necessitating a sunday morning repro (replaced lo and high res versions in original post)
Doug
Loads of data and lots to see in this image
Have to go HA myself once again (but not on Eta ).
Cheers Martin - that's the trouble with buying new gear, you've got to try it out on all the stuff you've imaged before to move one more step up the ladder.
Quote:
Originally Posted by jjjnettie
A great image Doug!
Thanks jjj
Quote:
Originally Posted by Ephemeral
Not bad probably a but overstretched IMO
This will probably be repro'd and rethought over and over.
Not too sure re over stretching though - Histogram looks ok...
Not a criticism as such just an observation and personal preference. When adjusting curves etc in normal photography often people aim for the following bell shape (refer attached)
IMO this also should be applied somewhat to astro imaging however this does not preclude variables such as yours where it appears the white point has been stretched to obtain an aesthetically pleasing look
An impressive image Doug - definitely an eye full!! Maybe a teensy bit overdone though - I note a small amount of clipping at the bright end so as Mike says, you've probably lost a bit of fine detail.
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