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Forum: Pentax K-1 06-26-2020, 07:11 PM  
Post your K-1 pictures!
Posted By VoiceOfReason
Replies: 29,654
Views: 2,626,002
Part of the Lacerta region, 3.8 hours total exposure, using my Samyang 135 at f/2.5.
Forum: Post Your Photos! 06-21-2020, 01:43 PM  
Night Messier 78 area
Posted By VoiceOfReason
Replies: 1
Views: 196
Here's an image I did while in Texas in late march for the purpose of astrophotography. It is M78 in Orion, and I went deep on it. I did 40x 240 second exposures for a total integration time of 3 hours with it. This is what is making me want to send my K3 off for astro modding. I used an iOptron CEM25EC and attempted guiding and dithering via MGEN II, but when guiding failed it also took out the dithering function due to high clouds, so there is more background noise than I like and to suppress some I also sacrificed some detail. The telescope used is a SharpStar 15028HNT 150mm reflector that is a fast f/2.8 and fairly well corrected. I stacked it in Astro Pixel Processor and processed in Photoshop. I should probably give it another shot again since APP did some releases that really improved some things and I set up some stuff in Photoshop that would better control the noise, allow extra sharpness and detail, and give an overall better image.
Forum: Pentax News and Rumors 05-21-2020, 06:17 PM  
Astrophotography lenses that will work on Pentax!
Posted By VoiceOfReason
Replies: 7
Views: 1,520
I get mine from Williams Optics. They make really nice M48->Pentax K mount adapters.

https://agenaastro.com/william-optics-wide-48mm-t-ring-for-pentax-k-mount-ca...r-m48k-tg.html
Forum: Pentax News and Rumors 05-18-2020, 06:38 PM  
New APS-C is
Posted By VoiceOfReason
Replies: 895
Views: 53,725
Unfortunately it is too slow for it, especially for focusing with a Bhatinov mask. It also doesn't work for my K3, K5, or K-01.
Forum: Pentax News and Rumors 05-18-2020, 04:44 PM  
New APS-C is
Posted By VoiceOfReason
Replies: 895
Views: 53,725
Nope, live view shows various stars and even bright things like star clusters. If you do a go-to and you're slightly off on a preview pic you can watch live view and see where the bright stars are and then move the mount to center what you want to capture. With the flippy screen out it makes it much easier to get stuff that is nearer the zenith, or if the scope has the camera in a weird position you just use the flippy screen to precisely center things. It's great for walking by and looking at a preview when an exposure ends too, just to make sure your stuff hasn't drifted. That is one of the things I absolutely love about the flippy screen on my K1ii, how much easier it is for AP. I wish my other cameras had that.
Forum: Pentax News and Rumors 05-18-2020, 04:30 PM  
New APS-C is
Posted By VoiceOfReason
Replies: 895
Views: 53,725
I'd like super high ISO (TBH wouldn't actually use above 1600 most likely), super high dynamic range, and a flippy screen. I'd be using it mainly for astrophotography.
Forum: Pentax News and Rumors 05-18-2020, 04:27 PM  
Astrophotography lenses that will work on Pentax!
Posted By VoiceOfReason
Replies: 7
Views: 1,520
SharpStar has made a new lineup called Askar that can use either a standard Pentax mount T adapter, and M48 then T mount adapter, or a normal 2" nosepiece with T adapter depending on the one you use onto the back of the thing and you've got a super flat field setup for Astrophotography or landscape. I've used some of their products before and I think I may need to get the 400mm f/5.6 and then the f/3.9 adapter for it too. They are all full frame compatible too.

I think it is cool of a company to release stuff like that that isn't just a "all but Pentax mount" setup.


Product|ASKAR|Jiaxing Ruixing Optical Instrument Co., Ltd.-Jiaxing RuiXing optical instrument co., LTD
Forum: Pentax DSLR Discussion 04-05-2020, 10:17 AM  
Astrophotography
Posted By VoiceOfReason
Replies: 1,204
Views: 278,151
Here's a few recent ones. Almost all were with equipment problem too.
Forum: Pentax K-3 12-26-2019, 06:43 AM  
why I won't buy a k3 (Warning: Satire Thread)
Posted By VoiceOfReason
Replies: 79,433
Views: 3,058,957
Nope, running a territory for Honeywell Building Services with some huge clients. My biggest lost their entire system due to a ransomware attack. They didn't tell me until it hit the security, access control, and CCTV servers. All 30 of them. Even worse they didn't contain it until it had already hit al my backups too.

I've been with them for a year now, and this has been by far the craziest it has been. I'm almost done though.
Forum: Pentax K-3 12-25-2019, 06:57 PM  
why I won't buy a k3 (Warning: Satire Thread)
Posted By VoiceOfReason
Replies: 79,433
Views: 3,058,957
I've pulled 564 hours of work over the past 45 days, coming right off of 3 weeks of pneumonia, with no days off, even holidays, and just pulled 42 hours over the past 3 days alone. Looks like I missed posting a ton to get in on the contests.
Forum: Monthly Photo Contests 12-14-2019, 07:41 AM  
NGC 1499 - The California Nebula
Posted By VoiceOfReason
Replies: 13
Views: 248
My entry is the California Nebula and some surrounding dark dust. I took this in September in north central PA. It is a total of 1 hour and 15 minutes of integration, or 25x 180 second shots at ISO 1600.
Forum: Pentax News and Rumors 11-18-2019, 08:25 PM  
Win a Pentax KP, LX, 55-300mm, and more: 100 Year Giveaway - November - Event Kickoff
Posted By VoiceOfReason
Replies: 184
Views: 12,290
ehh, I've never won a contest in my life, don't expect that I will win it here, and besides, had to put 87.5 hours in a work last week and should have that or more this week
Forum: Pentax News and Rumors 11-13-2019, 08:11 PM  
New Pentax astro-photography video series on YouTube
Posted By VoiceOfReason
Replies: 53
Views: 4,643
I can vouch for how good Pentax is for astrophotography. Almost all of my astrobin is Pentax.
Forum: Post Your Photos! 10-22-2019, 08:34 PM  
Night NGC 1499 - The California Nebula
Posted By VoiceOfReason
Replies: 10
Views: 358
Here is the California Nebula and some dust along with it. It was 25x 180s, ISO 1600, 20 dark (non matching lol), 10 flat, 50 bias, astro modded Pentax K5, WO Redcat, iOptron CEM25P, and guiding via MGEN II and Astromania 50mm guidescope. Processed in APP with final tweaking in PS.
Forum: Pentax News and Rumors 10-22-2019, 08:30 PM  
New K-series DSLR under development to be exhibited
Posted By VoiceOfReason
Replies: 3,487
Views: 259,778
I wonder how good it will be for astrophotography
Forum: Pentax DSLR Discussion 10-05-2019, 05:44 PM  
Astrophotography
Posted By VoiceOfReason
Replies: 1,204
Views: 278,151
The Cloudy Nights forum is where I learned a lot.



The equipment and total amount of exposures is different for each, but I have that info on my Astrobin link in my signature. For processing I generally use DSS (free) to stack, and Photoshop to process. It's kind of an art to do it.
Forum: Pentax DSLR Discussion 10-04-2019, 04:40 PM  
Astrophotography
Posted By VoiceOfReason
Replies: 1,204
Views: 278,151
Thanks!



It is multiple rigs. Check the astrobin link in my signature and most of these should be on there.
Forum: Sold Items 09-30-2019, 05:33 PM  
For Sale - Sold: Sigma 50mm f1.4 EX DG HSM
Posted By VoiceOfReason
Replies: 18
Views: 2,422
How flat is the field on this? I would be using it for astrophotography.
Forum: Pentax DSLR Discussion 09-28-2019, 07:22 AM  
Price of new apsc flagship
Posted By VoiceOfReason
Replies: 119
Views: 6,858
That's why I predict a settling price
Forum: Pentax DSLR Discussion 09-27-2019, 06:45 PM  
Astrophotography
Posted By VoiceOfReason
Replies: 1,204
Views: 278,151
Since this is still going I suppose I can give a few newer examples. I've improved a little.
Forum: Pentax K-1 09-27-2019, 06:12 PM  
Post your K-1 pictures!
Posted By VoiceOfReason
Replies: 29,654
Views: 2,626,002
This is 20x 180s ISO 800, SharpStar 150 f/2.8, Pentax K1 crop mode (oops), iOptron CEM25EC and MGEN II. Stacked in DSS, processed in Photoshop.
Forum: Pentax DSLR Discussion 09-27-2019, 04:24 PM  
Price of new apsc flagship
Posted By VoiceOfReason
Replies: 119
Views: 6,858
1200 to start, 6 months later 900
Forum: Pentax News and Rumors 09-19-2019, 06:33 PM  
New K-series DSLR under development to be exhibited
Posted By VoiceOfReason
Replies: 3,487
Views: 259,778
Heh, just wait for them to showcase the 100/150mp MF and 60mp FF along with this as a 26mp APSC.
Forum: Pentax K-1 08-26-2019, 12:39 PM  
Attaching a K-1 to a telescope
Posted By VoiceOfReason
Replies: 6
Views: 1,430
The Paracorr is for a newtonian, and what you have is an SCT. You will need the proper t-ring and maybe spacers, but the corrector I linked is pretty well the only thing that will work for you since that isn't an Edge version.

There are different types of correctors for different scopes, and some scopes don't need one. You have to have the proper one for your scope. I would also recommend a wedge for the mount itself so you're not limited to 15 or 20 second exposures.
Forum: Pentax K-1 08-25-2019, 06:48 PM  
Attaching a K-1 to a telescope
Posted By VoiceOfReason
Replies: 6
Views: 1,430
I do astrophotography with a K1 (and a K3, and a K5, and a K-01) and it's pretty easy. As long as you have the proper amount of backfocus you can just use a 2" T adapter. One thing you will need is a corrector for that since it is not an edge. You will need a corrector for it, and for a full frame one it's going to be expensive. Here's one: Starizona SCT Coma Corrector LF - Large Format C11/C14 - SCTCORR-LF

There are other correctors such as the much cheaper Celestron 6.3 (forget the 3.3, it wont work at all for AP), but iy will not correct full frame, or even fully correct APSC.

If you want to see what a K1 can do check my astrobin: Scotty Bishop's gallery - AstroBin
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