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11-01-2011, 03:27 PM   #121
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I took this last night with my Pentax A 50mm f1.7 It's a stack of 50 shots at 10 seconds, f1.7, 6400 ISO. It took quite a bit of processing in Photoshop to get it like this. But I still think it's pretty good considering all the light pollution. It's only cropped slightly so it gives you an idea of what a 50mm lens will show you.


11-01-2011, 07:29 PM   #122
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ASTEROID predicted to pass near Earth next week:

Take a Look: Huge Asteroid to Fly By Earth in November

"This asteroid is about 400 meters [1,300 feet] wide, and closest approach will be about 325,000 kilometers (201,700 miles) from Earth. When it flies past, it should be a great opportunity !"

I have no skills, absolutely none with this, so I am hoping someone here will be able to photograph this maybe ?
I am looking forward to see here : where will be the best place to see it, hopefully with the naked eye ... hopefully in North America.

If this was posted earlier, my sincere apologies.

JP
11-01-2011, 08:48 PM   #123
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QuoteOriginally posted by jpzk Quote
ASTEROID predicted to pass near Earth next week:

Take a Look: Huge Asteroid to Fly By Earth in November

"This asteroid is about 400 meters [1,300 feet] wide, and closest approach will be about 325,000 kilometers (201,700 miles) from Earth. When it flies past, it should be a great opportunity !"

I have no skills, absolutely none with this, so I am hoping someone here will be able to photograph this maybe ?
I am looking forward to see here : where will be the best place to see it, hopefully with the naked eye ... hopefully in North America.

If this was posted earlier, my sincere apologies.

JP
Unfortunately at a magnitude of 11 it won't be visible to the naked eye. (Here's a chart I found for comparison: Star Magnitudes Table) But hopefully someone here with a telescope can get some good pictures.
11-01-2011, 10:04 PM   #124
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QuoteOriginally posted by krp Quote
I took this last night with my Pentax A 50mm f1.7 It's a stack of 50 shots at 10 seconds, f1.7, 6400 ISO. It took quite a bit of processing in Photoshop to get it like this. But I still think it's pretty good considering all the light pollution. It's only cropped slightly so it gives you an idea of what a 50mm lens will show you.

Were you on a tracking mount, krp?

11-01-2011, 11:22 PM   #125
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QuoteOriginally posted by v5planet Quote
Were you on a tracking mount, krp?
Nope. The relatively wide focal length let me shoot at 10 seconds without trailing. But I used Deep Sky Stacker to align and stack the 50 frames.
11-02-2011, 07:35 PM   #126
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QuoteOriginally posted by krp Quote
Unfortunately at a magnitude of 11 it won't be visible to the naked eye. (Here's a chart I found for comparison: Star Magnitudes Table) But hopefully someone here with a telescope can get some good pictures.
Sorry about that ... I thought someone here would have the equipmetn/gear to get this asteroid ! ... Oh Well!

JP
11-03-2011, 02:44 AM   #127
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QuoteOriginally posted by jpzk Quote
Sorry about that ... I thought someone here would have the equipmetn/gear to get this asteroid ! ... Oh Well!

JP
Well, photographing a "star" of magnitude 11-12 with a larger telephoto lens and an equatorial mount isn't totally impossible. However, this object moves very fast and it may be a problem to find the place to point at in the sky.

You will need a large scope to find the beast visually, but perhaps this finder chart from Sky and Telescope will give someone the courage to give it a try:

http://www.skyandtelescope.com/observing/home/133013563.html
11-03-2011, 04:47 AM   #128
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Is anyone using "GRIP" for stacking?
I stumbled on this piece of software yesterday and it might be a option to deepskystacker, I can't really tell how good/bad it is yet but it seems promising.

see grelf.net - GRIP introduction

11-03-2011, 07:54 AM   #129
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QuoteOriginally posted by Gimbal Quote
Is anyone using "GRIP" for stacking?
I stumbled on this piece of software yesterday and it might be a option to deepskystacker, I can't really tell how good/bad it is yet but it seems promising.

see grelf.net - GRIP introduction
Thanks for the lead - always intersted in learning something new.

Well, I just tried to download it and I must say, it is not the easiest and most intuitive user interface, I have ever seen........

....but apparently worthwhile examining a bit closer.
11-03-2011, 01:43 PM   #130
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QuoteOriginally posted by Stone G. Quote
Thanks for the lead - always intersted in learning something new.

Well, I just tried to download it and I must say, it is not the easiest and most intuitive user interface, I have ever seen........

....but apparently worthwhile examining a bit closer.
I have been toying with it for a couple of hours now and I'm slowly getting used to the workflow. And I'm beginning to like it. It's pretty nice actually.
11-06-2011, 02:20 PM   #131
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Orion Nebula

This is a single exposure image of 30sec, 1600 ISO. Camera is a Pentax K-x, prime focus on 10'' Skywarcher AZ Dob mount.
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11-07-2011, 06:52 PM   #132
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A stack of 3 pictures with a 300mm lens.

Here is a stack of three long exposure pictures stacked in Photoshop. The first two were combined with an opacity of 50% and the third was added with 33%. No boosting of color was done. The fact of stacking the pictures brings more natural color to the result. I plan on doing a stack of around 50 pictures but won't be using Photoshop since it's not really made for that. A freeware called Registax does a fine job with lots of pictures and even .avi files. I forgot to mention that these pictures were taken in an urban area so the sky was very light polluted. Using the Pentax viewfinder, it's very hard even to see the stars. The liveview function doesn't help at all in this case. I'll try going to a place where the sky is darker but that''s at least 40 miles from where I live. I have to play with the levels to get a dark sky without modifying the stars. Of course, I had to use the O-GPS1 to be able to expose for more than a few seconds. The limit for a 300mm lens is about 1 minute 20 seconds.

Last edited by VE2CJW; 12-10-2012 at 01:09 PM.
11-08-2011, 09:05 AM   #133
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Here is one picture from about 4 months ago

11-08-2011, 09:08 AM   #134
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And another one from about 6 weeks ago


11-17-2011, 01:54 PM   #135
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I am looking to buy my first telescope and use it a lot for astrophotography. I would like to be able to view and photograph some galaxies, nebulas, comets, etc. Does this look like a good choice? Konus Konusmotor Electronic 500 Newton 114mm (4.5") Telescope 1781 FREE S&H 1781. Konus Telescopes.
I think once I have an EQ mount and tracking motor, all I need is a T mount to K mount adapter to start taking pictures. Am I missing anything?
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