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I have been reading the PHD2 manual and have noted the statement: "The settings for 'Use Dark Library' and 'Use Bad-pixel Map' are mutually exclusive - you can use one or neither, but not both at the same time".
So, in order not to reinvent the wheel, a question for those of you who use PHD2. Which, if either, do you find works best? Or. if it isn't that simple (and when is it ever?), what are the main things I should consider in making the decision?
QHY8 OSC and QHY6 Mono £400 (+postage UK mainland only)
Selling to move to LRGB imaging, the QHY6 is thrown in as a bonus :-)
QHY8 One Shot Colour - Cooled CCD Camera
QHY6 Mono Cooled CCD Camera
You can see pictures I've taken with the QHY8 on my website
Hello guys and girls, these are the first adventures of a new CCD user.
I hope you'll have a bit to laugh
i bought a used QHY8 from a fellow stargazer. It arrived yesterday. It was missing the documentation (but in the documentation was not part of the deal, so that's okay). After quite a while I got everything running (the Camara needs two power sources). As the weather was good for the first time in years, I immediately set up in my garden at 11 PM. First I was struck by a faulty USB cable - it took me about an hour and a half to isolate the problem as it was not constantly failing but intermittantly freezing the software and/or windows.
But after that, i was able to shoot a few short moon sequences with APT. However, the result was less than optimal. I was getting pesky little black squares. I suspected something with debayering and asked APT's Ivo and the qhyccd forum for help.
Ivo answered within about 30 mins, and after 2 or 3 messages everything was clear: the debayering settings in APT refer only to the display within APT, not to the saved images ! (I hear the more experienced SGLers ROFLing)
After some updates and mouseclicks, i got nice little stacked images of the full moon.
The next problem was the cooling: the unit cooled very well when connected straight to a power source, but with the QHY power converter in-between the cooling was mediocre (guessing from the outside temp of the casing). Also, the unit stubbornly said it was running at 25C, but the pictures were ok (yes, i know, moon pics dont have to worry about SNR, but still, they were ok, some test darks at 30 secs were also very ok).
Well, to cut a long story short: the QHY8 does not have a temp sensor!!! Its supposed to cool straight away at max power. APT (and other software) is somehow getting wrong temp values.
Finally, i used the QHY power converter for the sony chip and a second power supply for the cooling. The finding: the cooling via the QHY power converter was much weaker- even the fan went at a little lower rotation speed. Running through the second power supply, the unit cooled great. Possibly one of the cables was mistakenly sent instead of the original one- it looks suspiciously thin for a cable that is supposed to be transferring 36 watts at 12 volt.
So, after several hours of silently swearing, everything works! Yay!!!
PS: the suspiciously thin 36 watts cable (the cross diameter of the plug is 2.5mm):
After seeing some absolutely incredible widefield and through telescope results from a good friend in Brazil using the QHY8L this is the logical upgrade I have been considering from a modded Canon 450D.
Now I do know a few SGL members have the QHY8L and I have recently seen a QHY8 for sale.
Comparing the QHY8 against the QHY8L, the imaging capabilities "appear" similar, I appreciate the physical design is different. But aside from the latter, are there any other differences that would say put the QHY8L at a level above the 8 ?
Searching for images of the QHY8, they are few and far between and to be honest, I have not seen any that match ones I have already seen taken with the QHY8L. Now I know the skill in bringing out the image is arguably the most important aspect on the final result but I do need to be certain I am making the right decision regarding the capabilities of the camera ..... or "Bank of wife" will kill me, again
Many thanks in advance,
I hope all of you were able to get out last night.
I managed to capture 10x15min on the Rosette Nebula.
Teleskop Service 65mm, QHY8, EQ6 Pro, AS120MC guiding through an Altair 60mm, processed in Pixinsight
this compares the 1 hr of data I got on the 2nd to the 2.5 hours captured last night - big difference :-)