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Forum: Pentax K-5 07-11-2018, 01:48 PM  
K-5 For Astrophotography
Posted By SKYGZR
Replies: 1,090
Views: 262,271
Those results now have me really considering getting the recently aquired "slightly used" K-5 I grabbed from Adorama modded. Being on the fence has now become to almost the jumping off point. I don't have the cam in my possession as of yet though..
Forum: Pentax K-5 02-28-2017, 10:14 PM  
K-5 For Astrophotography
Posted By SKYGZR
Replies: 1,090
Views: 262,271
Also cross posted in the Astronomy Group

Since the latter part of '16 & mostly so far in '17, haven't had any extended clear skies to do much photon collecting. The brief outings w/ the K3ii have been basically all I've been able to collect, so looked back through some of my old data & found some captured w/the K5ii that I hadn't really worked with, so played around with it. Don't have easy access to the # of sub's & exposure time/ISO settings, but "guessing", probably around 30-50, with some & 800 & some @ 1600, & from 120s-480s, as this is kind of my normal routine on a target like this.

Used the SN8 f/4 w/the BaaderComaCorrector V1, & a LP filter (yet can't know/remember for sure if it was the CLS, or SkyGlow,or?)

Had to crop the field more than normal, as the stack used for the "L" layer was different from the one used for the RGB. It's evident in the upper right and a bit lower, as it was a bit tricky trying to line up the layers.
There are (2) versions. The first is "normal" processing (if one can call it that), in PS6..curves,levels,layers,Annies,Carboni's,GradeX,HLVG..all the "normal behavior" for those like myself to yet be a "Pixsiter" convert.


Added to this posting here: Another PENTAX offering - DSLR & Digital Camera Astro Imaging & Processing - Cloudy Nights
Forum: Pentax K-5 11-21-2016, 02:17 PM  
K-5 For Astrophotography
Posted By SKYGZR
Replies: 1,090
Views: 262,271
Forum: Pentax K-5 11-07-2016, 11:02 PM  
K-5 For Astrophotography
Posted By SKYGZR
Replies: 1,090
Views: 262,271
Posted also in the Astrophotography Group.

Took this w/ the K5ii on 9-2-16 @ 22:35 local. Used the Pentax DA/FE 10-17 3.5-4.5 lens @ f/4.5 set @ 10mm (lower foreground cropped). 120s, 3200iso. Used an I-Optron tracker. White Lighted foreground while exposing....

Forum: Pentax K-5 10-05-2016, 12:59 PM  
K-5 For Astrophotography
Posted By SKYGZR
Replies: 1,090
Views: 262,271
If one is really going to have any real success w/ video for Astronomy, one would need to use a dedicated Astronomy Video Cam & leave the DSLR for static captures...
Forum: Pentax K-5 10-03-2016, 04:41 PM  
K-5 For Astrophotography
Posted By SKYGZR
Replies: 1,090
Views: 262,271
Deep Sky Stacker WILL NOT work w/ "movie" files. Raw, jpg..etc...it's not meant for video frames...
Forum: Pentax K-5 01-28-2016, 11:32 PM  
K-5 For Astrophotography
Posted By SKYGZR
Replies: 1,090
Views: 262,271
Forum: Pentax K-5 01-22-2016, 11:23 PM  
K-5 For Astrophotography
Posted By SKYGZR
Replies: 1,090
Views: 262,271
Forum: Pentax K-5 12-06-2015, 08:41 PM  
K-5 For Astrophotography
Posted By SKYGZR
Replies: 1,090
Views: 262,271
Forum: Pentax K-5 09-17-2015, 09:58 PM  
K-5 For Astrophotography
Posted By SKYGZR
Replies: 1,090
Views: 262,271
Nice Result seti_v2....modded Pentax's are kind of a "rare" and seems they preform well..
Forum: Pentax K-5 08-08-2015, 12:29 PM  
K-5 For Astrophotography
Posted By SKYGZR
Replies: 1,090
Views: 262,271
Cross posted from the K3 thread:

ASCOM is for Mount control, some focuser's and dedicated (CCD) astro camera's...it's NOT for DSLR's. More on ASCOM here: ASCOM - Standards for Astronomy

Canon and Nikon DSLR's can be controlled using Backyard EOS, or Backyard NIK O'Telescope
Stark-Labs: Home has software (Nebulosity) for some DSLR control (NO Pentax), Image processing, and guiding (PHD).

If you want to use your Pentax, you will have to either use the built in intervalometer, or the wired one as DeadJohn has suggested.

So, to answer your question, NO, Nebulosity will not control your Pentax, yet may be able to stack and register the files acquired by the Pentax (as DeadJohn points out).

Personally, I use Deep Sky Stacker DeepSkyStacker - Free download and software reviews - CNET Download.com for stacking from Pentax & Canon files, and Photoshop CS6 for processing.

Forum: Pentax K-5 04-16-2015, 02:30 PM  
K-5 For Astrophotography
Posted By SKYGZR
Replies: 1,090
Views: 262,271
Trying to resolve small details like galaxies w/a regular lens is a lesson in futility..M-31 however, would be a good galaxy target for a lens, yet it has a high dynamic range (similar to M-42), where the "core" is brighter than the outlying structure.
Forum: Pentax K-5 04-16-2015, 11:03 AM  
K-5 For Astrophotography
Posted By SKYGZR
Replies: 1,090
Views: 262,271
@Pete-XL...Focusing is one of the most difficult issues...esp; when using a regular lens. Have you tried selecting a bright star, then zooming into 10x w/live view? Setting the focus @ infinity is usually not correct, need to "back it off" a tad. Each of your images suffer from this, as well as some "trailing", probably due to the inaccuracies of the O-GPS1.

@ wigley891..your colors came out well, and show nice details as well as your others...I might have to invest in pixinsight someday
Forum: Pentax K-5 04-14-2015, 09:43 PM  
K-5 For Astrophotography
Posted By SKYGZR
Replies: 1,090
Views: 262,271
The circular "halos" (like the one to the right) are "real" as they happen with this optical design (esp; on bright stars). I could have tried to brush/sponge them out, yet left them for "appeal".
Forum: Pentax K-5 04-14-2015, 09:00 PM  
K-5 For Astrophotography
Posted By SKYGZR
Replies: 1,090
Views: 262,271
This is what can be accomplished with experience (time invested.) Normally, I use a "modded" Canon 500D (T1i) for doing astro work, yet wanted to produce something with my un-modded K5ii. Did use an Astronomics CLS filter (2" screw on), that was attached to a coma corrector. An 8" f/4 Schmidt-Newtonian was the "lens". The mount/scope were also guided using a seperate mini-scope and guide camera. This is numerous images from various exposure times (10) @ 90s & (10) @ 180s @800iso w/the best 70% "stacked" together. The core has been layered over using shorter exposure times. A "synthetic" luminance (grayscale) layer was also used to enhance some of the details. Manually focused on a bright star, using the live view "zooming" function.
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