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Forum: Pentax K-5 & K-5 II
09-11-2021, 07:35 PM
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I personally prefer looking at photos of that nebulae in black and white because that's how it appears in the eyepiece of the telescope. I'm always mind-boggled by that 130 light year diameter of this stellar object. That being said, congratulations on the spectacular images of it which you have imaged. I have immensely enjoyed theses images. I would suggest that you submit the images to Sky and Telescope magazine and Astronomy magazine. They may wish to pose your question to their magazine readership. Thanks for posting the images.
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Forum: Pentax K-5 & K-5 II
09-29-2018, 07:22 AM
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Visually stunning, Eric. I particularly like the comet and the star cluster. Nice colors in the Nebula. Very well done. If you already haven't done so -- you should cross-post the images over on the CN digital photography forum -- just to show those guys the capabilities of a Pentax camera.
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Forum: Pentax K-5 & K-5 II
10-18-2016, 01:10 AM
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Stunningly beautiful images, Pete. Well done. Very well done! Thanks for posting them.
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Forum: Pentax K-5 & K-5 II
10-03-2016, 09:35 AM
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Thanks. I'll try to find it on the internet somewhere.
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Forum: Pentax K-5 & K-5 II
10-02-2016, 03:18 PM
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Guys:
Thanks for the helpful and useful information. One of the things I was thinking about doing in the desert is shooting movie frames of the Moon and/or a planet with the Pentax K3 through the C8 or some other telescope. Has anyone ever had any experience with that? I have an 80 mm achromat finder telescope (Lumicon) and a 77 mm Kowa flourite spotting scope which will work like a camera lens -- or at least Kowa said it would but I don't have the digiscoping attachment for it and it is expensive to acquire it.
Is there any astronomy astrophotography software out there which will stack Pentax movie images?
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Forum: Pentax K-5 & K-5 II
09-29-2016, 09:06 PM
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Eric:
Excellent capture of the nebula. I am in the process of acquiring an old 1978 Celestron 5 inch Schmidt Cassegrain telephoto lens; and, I am going to learn how to do some astrophotography. I should get it hopefully sometime next week. The lens will be 1,250 mm in focal length Here is a total "novice" question: On the K3 camera or the K5 camera in the camera settings for the lens focal length -- do you set the camera for 1.) the focal length of the telescope or 2.) for the expanded focal length due to the 1.5x sensor in the camera, i.e. 1,250 mm for a 1,250 mm lens or the expanded length of 1,875 mm because of the camera's sensor at 1.5x [1,250 mm x 1.5]?
How long of a period of time did you expose each of the shots of the nebula; and, what settings on the camera did you use to do accomplish it?
I am hoping to get away to the California desert next weekend and give it a try on my C8 -- maybe at the Moon and the Ring Nebula.
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Forum: Pentax K-5 & K-5 II
09-26-2016, 03:43 PM
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Forum: Pentax K-5 & K-5 II
09-24-2016, 04:48 PM
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Fantastic photo, Pete. You should send it to Sky & Telescope magazine -- maybe they would publish it. Thanks for the data on the exposure time and settings. I'm still trying to learn how to do that.
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Forum: Pentax K-5 & K-5 II
09-13-2016, 06:25 PM
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Thanks. What astro software works with the K1, if you know? I have not found any which works with the K3 but then I haven't dutifully looked for the past year. There might be new software out there -- it changes pretty rapidly. I am just not aware of it.
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Forum: Pentax K-5 & K-5 II
09-13-2016, 02:40 PM
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Thanks. Interesting idea. The K3's box references an AC Adapter Kit (K-AC132) which is one of the few Pentax gizmos I don't have. That would probably solve that "power hungry" issue if that adapter is for the camera. I would assume that it could be hooked up to a Honda generator in the field for astrophotography purposes since the telescope's computerized mount is run off the generator. It's difficult to tell because the reference on the K3 box to that particular adapter is so vague. There are some expensive astro software programs out there which will control a DSLR camera but I am not aware of any which will work with Pentax -- just Canon and Nikon.
Will the new K1 Pentax camera link up and function with a laptop computer? If so, it may be time to upgrade the camera.
Will that FLU card transfer images to a laptop computer as well? I am asking because I not particularly computer literate.
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Forum: Pentax K-5 & K-5 II
09-13-2016, 10:04 AM
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Thanks, Pete. I took some handheld pictures of the Moon the other night using a 500 mm mirrorless lens and the K3. A couple turned out well. I did it to try to figure out how to use the camera with a Schmidt Cassegrain telescope since that mirrorless lens is essentially the same as the Schmidt Cassegrain telescope. The difficulty is in the focusing and getting it right. I used the "live view" to try to focus the camera as it was impossible through the viewfinder nor could I do it with a Pentax reconverter attached to the viewfinder of the camera. I now am thinking that the best way to do it is to somehow connect the K3 to a laptop computer and focus the K3 via the image which would be presented on the computer's screen if that is possible to somehow manage. Does anyone have any suggestions as to how to accomplish this? I'd like to figure this out before the next New Moon as I would like to get out to the desert in Joshua Tree and try to do some astrophotography with the K3 through the Schmidt Cassegrain telescope. By the way, did you use a ND Filter on the Moon shot with your 400 mm lens? Perhaps, that may be the problem with the brightness of the Moon in "live view" mode? I could not even see the "Mare" of the Moon to even focus the camera due to the "brightness" of the Moon in "live view." By the way, there is an excellent article on using "Autostakkert" in the recent edition of either Sky and Telescope magazine or Astronomy magazine. I scanned it and made a Pdf of it and have it if anyone is interested in it. I'd attach the Pdf but I don't know how to do it. I'll look for it and post the citation to it in the magazine in case anyone is interested.
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Forum: Pentax K-5 & K-5 II
09-11-2016, 04:30 PM
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I have a K3. It's my understanding that the PK Tether does not work with the K3 camera. Is this correct? Has anyone used the K3's "movie" function to capture "video images" through a telescope and then "stacked" them? If so, how did you do it? I have a Celestron Schmidt Cassegrain telescope with which I would like to try that technique out on the brighter planets and brighter deep space objects. If I remember correctly, I believe that Jerry Lodriguss alludes to that technique. although quite briefly, in his book on astrophotography and the DSLR. Somewhere I have that e-book on a cd-rom -- I'll have to look for it.
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Forum: Pentax K-5 & K-5 II
09-03-2016, 08:19 AM
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Excellent links on wonderful and useful articles -- thanks very much for posting them.
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Forum: Pentax K-5 & K-5 II
08-30-2016, 07:03 PM
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Beautiful capture of the Triffid and the Lagoon.
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Forum: Pentax K-5 & K-5 II
02-19-2016, 05:00 PM
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Well done. Thanks. I saw it first on CN.
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Forum: Pentax K-5 & K-5 II
01-09-2016, 04:19 PM
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Terrific photographs of the southern sky. Stunning in every respect. Well done.
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Forum: Pentax K-5 & K-5 II
11-03-2015, 01:30 PM
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Pete: You will have to try the California coast.
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Forum: Pentax K-5 & K-5 II
11-01-2015, 12:35 PM
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Forum: Pentax K-5 & K-5 II
10-12-2015, 11:49 AM
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NIce capture of the companion galaxies as well.
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Forum: Pentax K-5 & K-5 II
10-05-2015, 11:14 AM
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Forum: Pentax K-5 & K-5 II
10-01-2015, 04:39 PM
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Wow! Outstanding photographs.
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Forum: Pentax K-5 & K-5 II
10-01-2015, 03:31 PM
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Great photographs, guys. I wanted to photograph it but it was cloudy in L.A. and I could not see the Moon -- much to my disappointment.
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Forum: Pentax K-5 & K-5 II
09-22-2015, 01:11 PM
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Well done. Lovely photographs.
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Forum: Pentax K-5 & K-5 II
09-18-2015, 12:14 PM
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That's the problem I'm encountering is the exposure times for planets (Mars; Jupiter; and, Saturn) and how to calculate the exposure times with the C8 and the Edge 11 SCT's. I'll again play with it the next time I'm out in the California desert. Is there a decent book out there on deep space object astrophotography (galaxies; nebulae; globular clusters -- Messier Class objects) for a SCT and a Pentax DSLR. I know that Jerry Lodriguss has one on the market -- is it any good?
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Forum: Pentax K-5 & K-5 II
09-17-2015, 03:15 PM
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... and we appreciate those marvelous photographs.
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