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QHY5v First Light


jgs001
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Finally I managed to first light my QHY5v last night. I only got 40 minutes in total, but it's good to know it's working :headbang:...

Anyway... I installed all the drivers and software during the day, and it was worth it, it was a bit of a faff getting the correct software installed to get the camera working as both a planetary/lunar camera and a guide camera...

Anyway... First impressions...

1) It's a lot lighter than a DSI, when I was balancing, I was able to balance the kit out with only a 5Kg counter weight, instead of the 10Kg I had been using... Phew... that feels so much better carting it all in and out now...

2) I tested out on M45, a good bright target to make focussing etc easier. I have to say, that I was getting stars showing on PHD with only a 0.2 second loop, so it certainly seems to be a sensitive little beastie for a CMOS chip... Oh, I don't mean the bright sisters.. one or two of the fainter ones were in view also.

I had no problems with the guiding, all worked well. Just a shame that only 20 minutes after guiding locked on, the clouds had moved in and spoilt the night.

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Forgive my ignorance, but what is the difference between the QHY5 and the QHY5V? I see on the Modern Astronomy website that there is a £10 difference between the two. I'm looking to purchase one in the near future as a guider/ lunar & planetary camera- just a little confused as to which to get!

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A couple of things. the 5v has a smaller sensor. The 5v has a global shutter, rather than a rolling shutter, which is better for imaging. I called Bern and discussed with him, and as soon as I said Lunar/Planetary he told me to get the 5v.

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Thanks John

So am i right in saying that the larger sensor in the 5 is better for guiding as its easier to get a guidestar on the chip? I want to use it for guiding mainly and occasional imaging, so i guess the 5 is the one to go for.

Cheers

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  • 7 months later...

Not sure I can really answer that.

As I understand it, the bayer matrix of the colour camera reduces the overall sensitivity a bit...

but the key question is, does the colour one work for you, if so, then I don't see that it was a mistake. But you're the one who really needs to decide that.

Edited by jgs001
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i went for the colour just for mainly guiding but i did want to dabble in lunar and plantary imaging, it's good for guiding but i struggle to find a guide star so i have to use the finder on the st80 to locate one is this normal ?

Edited by cardconvict
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I've not had too many problems. Make sure the focus is as good as can be. Take darks in the guiding software, that makes a big difference. There's a darks button in PHD for that purpose.

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  • 1 year later...

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