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Forum: Pentax K-5 & K-5 II 04-12-2018, 03:59 PM  
K-5 For Astrophotography
Posted By k5astro
Replies: 1,131
Views: 347,645
Thanks @geo444.

By the way, you can get Pentax and other sensor data here: Sensorgen - digital camera sensor data
Forum: Pentax K-5 & K-5 II 04-06-2018, 04:23 AM  
K-5 For Astrophotography
Posted By k5astro
Replies: 1,131
Views: 347,645
Yeah GPS sync is not trivial. I looked into it enough to decide it wasn't worth my effort. Since I bring my laptop to control a stellarmate, I setup sites on Kstars on my laptop and I don't drive far enough to change the timezone so basically the time is taken from my offline laptop and the location is the one I set in Kstars.
Forum: Pentax K-5 & K-5 II 04-05-2018, 04:10 AM  
K-5 For Astrophotography
Posted By k5astro
Replies: 1,131
Views: 347,645
Set the USB setting to MSC (Mass Storage Class). The way I understand it, the INDI driver talks to GPhotolib2 which talks to the camera. But yes, there is nothing else to buy or install. It will start up as a Wifi hot spot and you connect to it using the address stellarmate.local.

I'm not sure if I explained this, but the most common use of stellarmate is to install Kstars on your laptop - I have a Mac - and connect to stellarmate via Ekos, part of Kstars. Kstars is a comprehensive program like Sequence Generator Pro (but free!) so you should follow the setup wizard and not change any settings until you've used it and know what you doing. However, simplest thing to do is just connect to stellarmate via VNC and use it that way - a little slow in response but workable.
Forum: Pentax K-5 & K-5 II 03-28-2018, 02:18 PM  
K-5 For Astrophotography
Posted By k5astro
Replies: 1,131
Views: 347,645
Yes. K5 can be controlled by kstars. I have been doing so for quite a few months now.

There were two issues that were resolved with working with GPhoto2 and stellarmate/kstars developers.

1) recognize the model
2) mounting issue in Linux

So the caveat is that you must control via Linux OS, stellarmate for example

I know it won’t work with Mac because of mounting/device capture issues. It may work with windows but I don’t know.
Forum: Pentax K-5 & K-5 II 03-27-2018, 05:31 AM  
K-5 For Astrophotography
Posted By k5astro
Replies: 1,131
Views: 347,645
I’ll give it a try but for some time now GPHOTO2 has supported the k5. Its part of Kstars for astrophotography toolset. Now I’m trying to get them to fix the k3 operation.
Forum: Pentax K-5 & K-5 II 10-04-2016, 03:26 AM  
K-5 For Astrophotography
Posted By k5astro
Replies: 1,131
Views: 347,645
Oops... PIPP (Planetary image pre-processor) is good for movie processing.
Forum: Pentax K-5 & K-5 II 10-03-2016, 04:08 AM  
K-5 For Astrophotography
Posted By k5astro
Replies: 1,131
Views: 347,645
Of course! DeepSkyStacker is used by most people it seems. Works great and is easy to use. But you need to output DNG raw files, not PEF files.
Forum: Pentax K-5 & K-5 II 10-02-2016, 03:48 AM  
K-5 For Astrophotography
Posted By k5astro
Replies: 1,131
Views: 347,645
A lot of people confuse the focal length issue. The sensor size of the camera does not change the focal length of the lens or its properties! The crop factor (1.5) is the sensors size relative to a 35 mm sensor - the old film standard. It simply means that your image is a smaller portion of the field of a 35 mm sensor - 1/1.5 x smaller.

So the focal length settings are whatever the lens is - no crop factor to account for.

(The confusion arises because often people are comparing the equivalent fields of view. In this case you need a wider lens (shorter focal length) on a cropped sensor to get the same field of view.)

By the way, the K5 and K3 work great with the GPS unit (or built in on the K3 I think) which will help you camera track the stars, but more than 300mm may be too much. Worth looking into!
Forum: Pentax K-5 & K-5 II 09-30-2016, 03:31 AM  
K-5 For Astrophotography
Posted By k5astro
Replies: 1,131
Views: 347,645
Very nice! Super clear and sharp!
Forum: Pentax K-5 & K-5 II 09-08-2016, 04:45 AM  
K-5 For Astrophotography
Posted By k5astro
Replies: 1,131
Views: 347,645
You guys have inspired me to buy the O-GPS1. I'm still waiting for it but when I was looking for a longer lens, I stumbled on Celestron Nexstars for sale. I couldn't resist. Now I'm the proud owner of Nexstar 5se :-)

Now if it would just stop raining! :-P
Forum: Pentax K-5 & K-5 II 08-31-2016, 03:25 PM  
K-5 For Astrophotography
Posted By k5astro
Replies: 1,131
Views: 347,645
Amazing group of shots. Inspiring!
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