Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: The Thing on Jun 25, 2014, 17:10:05

Title: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: The Thing on Jun 25, 2014, 17:10:05
All Sky image using QHY5IIL using the Evetar 1.25mm f2 lens as supplied in the deluxe kit. Captured at Gonneville, 50560, France. 24 June 2014 before the streetlights turn off at 1:00am.
I didn't manage to capture the same after the lights went off. Try again tonight! It was quite a difference.

(http://iloapp.dewityourself.co.uk/data/_gallery/public/0/140371177727803400_resized.jpg) (http://iloapp.dewityourself.co.uk/data/_gallery/public/0/140371177727803400_resized.jpg)
Title: Re: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: Fay on Jun 25, 2014, 19:24:00
That little camera is good Duncan! you did a good one at Micks as well
Title: Re: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: MarkS on Jun 25, 2014, 20:30:22
Cool!  GonzoVille looks pretty dark!
Title: Re: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: The Thing on Jun 25, 2014, 21:11:48
The Milky Way was awesome last night, especially after the street lights went out.

BTW The very bright building is our 'barn' reflecting a street light on the lane 20m away, The chimneys are on the house, and the top of the image is the direction of the streetlight.
Title: Re: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: RobertM on Jun 25, 2014, 21:14:18
Unusual shot that 8)
Title: Re: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: JohnP on Jun 26, 2014, 08:13:45
cool image Dunc & the sky looks very promising - Jealous as usual - John :-)
Title: Re: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: The Thing on Jun 26, 2014, 09:57:50
BTW it was a 20s exposure. At Micks I used a 1 minute exposure or more using single snapshot mode, I really need to do a like for like. Or borrow a SQM.
Title: Re: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: Mike on Jun 28, 2014, 09:47:05
Duncan can you take video with this camera too?
Title: Re: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: The Thing on Jun 28, 2014, 18:16:16
I took video so yes, as AVI and SER. Can't find a way of processing it that provides a better result than the single frames.

I used SharpCap to do these captures. Next time I'm going to use QHY EZPlanetary as it is more stable and provides more control, I practised with it last night when there were cloud gaps as it's a bit quirky.

BTW I keep meaning to download a motion triggered app to capture meteors, anyone know a good one?
Title: Re: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: Mike on Jun 28, 2014, 19:59:26
I was going to say it would be a great meteor cam.
Title: Re: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: JohnP on Jun 30, 2014, 08:29:26
QuoteBTW I keep meaning to download a motion triggered app to capture meteors, anyone know a good one?

Hey Dunc - I remember trying something similar myself a number of yesrs back using an old B&W security camera I had. see here:

http://forum.orpington-astronomy.org.uk/index.php?topic=5005.msg27590#msg27590

The S/W I used was this:

http://sonotaco.com/e_index.html

It was really good as I remember & you could download a 30 day free eval...

HTH - John
Title: Re: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: Mike on Jun 30, 2014, 09:35:42
That looks like pretty good software John. It obviously buffers video and then keeps just whatever is relevant (based on changes, sudden brightness, etc.) So you could happily leave it running all night long.

However, at £150 it's way overpriced and i'm sure there are freeware alternatives out there.
Title: Re: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: JohnP on Jun 30, 2014, 12:34:27
Agreed I didn't & wouldn't buy for that price - but sure I had a 30 day free eval which was great to see if the security cam was gonna do its job (which it did) - I remember it being quite exciting leaving it running all night & then looking back through files next morning to see what you had captured..

John..
Title: Re: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: Mike on Jun 30, 2014, 14:19:46
It would probably be (relatively) easy to write something yourself using either Processing or OpenCV (C++ or Python).

I'm thinking the easiest way would be to capture individual frames into a folder whilst also doing motion detection on them. If no motion is detected then frames older than about 5 seconds old are deleted. If motion is detected then it takes all frames from 5 seconds ago up to a user set amount of seconds in the future and generates a video file from them which is stored in a separate folder.


Title: Re: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: The Thing on Jun 30, 2014, 17:30:56
I looked at the Sonotaco stuff. It's only worth it if you want to take part in a meteor tracking network as they use it as their standard software.

#coding something is tempting though Phillips Webcam software has come with a motion detection function since at least the time of the SPC900 so there must be something out there There are other things out there but I am a bit wary of some of the free stuff in case it carries malware or nasty adware.
Title: Re: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: The Thing on Jun 30, 2014, 17:46:46
I'm going to try this http://www.ispyconnect.com/ (http://www.ispyconnect.com/)
Title: Re: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: Mike on Jun 30, 2014, 18:22:46
I can't see any mention of it recording pre-buffered video but it may be worth a try.
Title: Re: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: The Thing on Jun 30, 2014, 18:26:18
It mentions a configurable JPG buffer somewhere on the site for the motion detection. It's loaded up now so I'll give it a go and let you know. Need a fake meteor trail...
Title: Re: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: Mike on Jun 30, 2014, 22:04:53
I've been playing with this myself. Really simple to use and has a configurable buffer (in seconds). You can also configure the sensitivity so you'll just need to tinker with it to get it right.
Title: Re: All Sky Image 25 June 2014 00:49 Gonneville, Normandy
Post by: The Thing on Jul 01, 2014, 12:52:14
I haven't been able to get anything but a grey image from my QHY5LII. I un/reinstalled the WDM drivers with no change. Works fine in other apps.

I am now trying YAWcam  (http://www.yawcam.com) which is a lot simpler and shows an image.
Title: A Better All Sky Image from Normandy
Post by: The Thing on Jul 04, 2014, 21:25:44
All Sky image using QHY5IIL at Gonneville, 50560, France. 4 July 2014
5s at 50% gain using QHY EZPlanetary. (Ignore the black banana - CCD is dirty).

BEFORE the streetlights turn off at 1:10am.
(http://iloapp.dewityourself.co.uk/data/_gallery/public/0/140450491427853500_resized.jpg)

AFTER the streetlights turn off at 1:10am. I love it when the Milky Way goes all the way across to them horizon. I spotted the Sagittarius Star Cloud in my binoculars just over the neighbours roof with my 80x20 bins. Superb. Also saw M81 + M82 was easy.
(http://iloapp.dewityourself.co.uk/data/_gallery/public/0/140450491320464400_resized.jpg)