QHYCCD

Playing with QHY5 mono

rick

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Playing with QHY5 mono
« on: February 11, 2009, 03:36:48 AM »
Hello all,

I own a monochrome qhy5 only few months, but I'm very satisfied, even a didn't have much opportunities to test it, cause of cloudy nighths. I had just few nights with clearly sky. I bought this camera for planetary imaging, but i tried also some deep sky. So here you have some test images from my balcony in urban conditions with average/poor seeing (without filters):


Moon mosaic: Newton 8"/f5 + 2x barlow. Mosaic of 5 individual pictures, joined in PS CS3. Every pictures is result of around 300 pictures s tacked in Registax with resolution 1280x1024


NGC 2903 in Leo: Newton 8"/f5 (in prime focus). 598x5s, gain 90, dark frame, bias, stacked in Deepskystacker


M42 - core: Newton 8"/f5 (in prime focus). 128x3s, Gain 80, dark frame, bias. Stacked in Deepskystacker


M42: Newton 8"/f5 (in prime focus). 717x4s, gain 65, DF, Bias. Stacked in Deepskystacker. Shadow/highlight in PS CS3.



Regards

Roman Vanur

« Last Edit: January 04, 2010, 03:03:37 AM by rick »
8"/f5 Newton + 76/300 | EQ-5M |  TV Plossl 8mm
QHY5 mono passive cooled | filters visual R,B, Baader CCD R,G,ND,CaK, IR(760 and 950nm)
Panasonic FZ-18 |  macro 5:1| Tele 1.7x

Re: Some QHY5 pictures
« Reply #1 on: February 11, 2009, 06:38:36 PM »
Hello Rick,

Can you provide some details about what telescope, f/l, and whether these are stacks.  I think their real nice and look forward to seeing more.

Dan

rick

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Re: Some QHY5 pictures
« Reply #2 on: February 13, 2009, 04:48:54 AM »
My previous message was updated  ;).
8"/f5 Newton + 76/300 | EQ-5M |  TV Plossl 8mm
QHY5 mono passive cooled | filters visual R,B, Baader CCD R,G,ND,CaK, IR(760 and 950nm)
Panasonic FZ-18 |  macro 5:1| Tele 1.7x

Re: Some QHY5 pictures
« Reply #3 on: February 13, 2009, 07:12:51 PM »
Thank you Rick,

Well, it's easier to understand why these look so nice.  And although I do not comment on all of the pictures, I am very pleased to see some of the other QHY cameras making their presence known. 

 On comment which I will make, in the large M42 there are some horizontal bars which I believe are caused by the driver software.  Also, on the NGC 2903, I notice 3 faint diagonal streaks below the galaxy.  These also, I think might be driver interrupt artifacts.  Perhaps, some of the others will jump in and guide you on this.  I believe these can be reduced or eliminated.

Best wishes and thanks,
Dan   

rick

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Re: Some QHY5 pictures
« Reply #4 on: February 14, 2009, 06:40:24 AM »
Thanks for reply.

I think, that is probably cause of bad dark frames. These ones I maded after light frames - all darks at once, Well, the temperature of camera can change during shooting light frames. Maybe I have to make around 10 darks for every 100 light frames.

Horizontal bars could makes also bad bias frames, also maybe driver. For capture, I use QGVideo

Regards

Roman
« Last Edit: February 14, 2009, 06:45:17 AM by rick »
8"/f5 Newton + 76/300 | EQ-5M |  TV Plossl 8mm
QHY5 mono passive cooled | filters visual R,B, Baader CCD R,G,ND,CaK, IR(760 and 950nm)
Panasonic FZ-18 |  macro 5:1| Tele 1.7x

Coops

Re: Some QHY5 pictures
« Reply #5 on: February 15, 2009, 07:48:26 AM »
Hi Rick,
The moon shot is stunning,I like it

The streaks that Dan mentioned in NGC 2903 I used to get all over my shots when I was using a SPC900,never got to the bottom of them so not much help there sorry ???

All the best Pete

Clive

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Re: Some QHY5 pictures
« Reply #6 on: February 16, 2009, 02:36:11 PM »
I too used to get these streaks on my webcams.  I tracked it down to the wiring picking up stray signals.
I open the camera and moved the wire (this was a moded camera) and the lines disappeared.
I don't know about the QHY5.  I have one but have not had any opportunity to use it.

I did read somewhere that it might also be the driver needed to be changed.  To which driver I do not remember.
Was there a cmos.dll that you could download and use that would stop this behaviour ?
Clive.

http://homepage.ntlworld.com/c.rogers/

Fighting for darker skies.
From 52:26ºN 01:27ºW (Coventry, UK)

Re: Some QHY5 pictures
« Reply #7 on: February 16, 2009, 02:49:04 PM »
Wow, with QHY5!
Very good work.

J-P

Re: Some QHY5 pictures
« Reply #8 on: March 14, 2009, 03:25:48 AM »
Very impressive, managing to grab some DSO's with this outrageously cool little cam. I LURVE it  :)

Karlo

rick

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Re: Some QHY5 pictures
« Reply #9 on: April 04, 2009, 05:12:41 PM »
Another heap of qhy5 pictures:

Venus:



8"/f5 Newton, 6mm vixen plossl, red filter, exp. 8ms, gain 40.



Saturn:



8"/f5 Newton, 6mm vixen plossl, exp. 40ms, gain 80.



M13:



8"/f5 Newton, 6mm vixen plossl, exp. 340x2,5s, gain 80, under urban sky condition.



Best Regards

Roman Vanur
« Last Edit: September 07, 2009, 10:27:24 AM by rick »
8"/f5 Newton + 76/300 | EQ-5M |  TV Plossl 8mm
QHY5 mono passive cooled | filters visual R,B, Baader CCD R,G,ND,CaK, IR(760 and 950nm)
Panasonic FZ-18 |  macro 5:1| Tele 1.7x

rick

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Re: Some QHY5 pictures
« Reply #10 on: April 10, 2009, 03:31:34 AM »
My the best images (for now  ;)) taken with QHY5:

Saturn



Clavius



Moretus:



Gassendi:


Panorama:





A question: camera framerate is still around 3fps, when I use 1280x1024px, or around 11fps when I use 640x480px resolution. How can I switch camera to fast framerate mode?

Best regards

Roman Vanur
8"/f5 Newton + 76/300 | EQ-5M |  TV Plossl 8mm
QHY5 mono passive cooled | filters visual R,B, Baader CCD R,G,ND,CaK, IR(760 and 950nm)
Panasonic FZ-18 |  macro 5:1| Tele 1.7x

TVDEEDE

Re: Some QHY5 pictures (+ help)
« Reply #11 on: April 10, 2009, 04:44:03 AM »
Roman,

which software are you using to capture your images?  Normally QGVideo with SER-capturing should allow you to get about 10fps (at least on my PC)
A lot depend sof course on the transfer speed of your harddisk.  Some older Laptop disks give worse results.

Webcams do offer higher speeds but they have image compression that helps reducing the amount of data BUT also has an effect on the image quality.

regards
Tom

rick

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Re: Some QHY5 pictures (+ help)
« Reply #12 on: April 10, 2009, 05:28:29 AM »
Thanks Tom,

I using QGVideo. I recording .avi file or .fit, but also will try .ser files. In HD Tune utility was max transfer rate 55 MB/sec.  Probably it's a maximum a can get wit this notebook :-\.


Roman
« Last Edit: April 10, 2009, 05:30:34 AM by rick »
8"/f5 Newton + 76/300 | EQ-5M |  TV Plossl 8mm
QHY5 mono passive cooled | filters visual R,B, Baader CCD R,G,ND,CaK, IR(760 and 950nm)
Panasonic FZ-18 |  macro 5:1| Tele 1.7x

TVDEEDE

Re: Some QHY5 pictures (+ help)
« Reply #13 on: April 10, 2009, 06:10:10 AM »
Roman,

55MB/sec should be plenty (@10FPS you need about 13MB/sec transfer rate), but there is a huge difference in what a tuning utility returns and what the average rate is
Are you sure the 55MB/sec was for writing data?  Reading at that rate seems plausible but 55MB/s for writing to a notbook HDD seems a lot.
I'm not sure what utility you used to test. 

On my desktop, I get about 8 to 10 FPS in full screen mode saved in SER.

in lower resolution modes, you can of course get higher speeds as less data needs to be shipped around.

regards
Tom

rick

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Re: Some QHY5 pictures (+ help)
« Reply #14 on: April 10, 2009, 07:52:45 AM »
Maybe it is some theoretical value. I was surprised, when 55MB/sec was appear in HD Tune. Well, I try simply copy 1,96 GB file and average speed was 19 MB/s, that's the real value ! I will try other formats for capturing.

Roman
8"/f5 Newton + 76/300 | EQ-5M |  TV Plossl 8mm
QHY5 mono passive cooled | filters visual R,B, Baader CCD R,G,ND,CaK, IR(760 and 950nm)
Panasonic FZ-18 |  macro 5:1| Tele 1.7x