Bear with me, but I am a little confused about using the Astrotracer with the K1-II and need some help.
With the O-GPS1 after I did the Calibration I could go to a display where I could place the amount of seconds I wanted to use in the "B" setting and this way, the Astrotracer would shoot the time I instructed.
In the K1-II I can go either to only "B" or if not, go to "M" and here I can program the time I need, but I don't know if by doing this, I am getting the Astrotracer function to work.
I would welcome any comments and/or help.
I am trying to use the Astrotracer correctly for a first time, since I just got the K1-II for only a few days.

Thank you.

Sorry I don't know much about the K-1ii but I thought that astrotracer only worked in when in B mode and you could only set it in 10s increments (on current cameras). I've found that to be good enough granularity. Most things in the night sky won't blow out the highlights at ISO 100 at 10s and the things that would likely need some really long glass and short exposures any way. Those things would be the moon or the close planets and for those things astrotracer isn't usable anyway. Even bright objects that one would use astrotracer for like the Pleiades wont blow out the highlights at 10s.

Thank you for your reply, but all I need to know is HOW to make those 10sec increments while in "B" setting. That is where I am completely lost at this moment.

Ok. I misunderstood. On my K-3 and K-3ii you can switch between regular bulb mode and astrotracer by pressing the green button. Once it is actually in astrotracer mode on my K-3 it is the front dial that I use in manual mode for adjusting the exposure time. I would assume it is the same on the K-1 series of cameras, but it should be one of the dials.

Thank you so much. That makes sense. That is what I was doing, but I was not sure if the Astrotracer was functioning then. It is rather confusing when it changes from "B" to the other frame and there is no clear instructions anywhere in the manual as how to use the Astrotracer. Once again, thank you very much, indeed!

Didn't you get a manual with your camera? Page 84 of the K-1 Mark II manual explains exactly how to use Astrotracer.

http://www.ricoh-imaging.co.jp/english/support/man-pdf/k-1-2.pdf

Note that timed exposure in Bulb mode is only one option (the default, I believe). You can press the green button and switch to a true Bulb mode with Astrotracer active. In that case, you can hold the shutter open for any exposure length you like up to the maximum that the camera shows you on the LCD, which depends on the lens you use and where in the sky you are pointing. And the minimum exposure time becomes as quick as you can press the shutter button twice in a row. In other words, much shorter than ten seconds. Practically speaking, of course, you would likely use an external intervalometer to set the exposure time in that mode, hence one second would be the practical minimum exposure time.

MossyRocks spoke of the stars in the Pleiades not saturating at 10 seconds. While that depends on the aperture of the lens you use, it is true enough for me using a 300mm lens at f/5.6. But on one occasion while shooting the Pleiades, I did need to use less than 10 seconds. It was when Venus was in the same field. I used exposures down to 3 seconds but Venus was still blown out.

I appreciate your comments very much. Yes, I have the manual and read it but was confused, first by the lack of color in the manual and second by the sign in the camera that indicates that the Astrotracer is off when I pressed the green button in order to set the amount of time that the shutter would remain open. Even though I have been a Pentax user for many years, I am new to Astrophotography and slowly gathering experience day by day, mainly for living in Miami where right now our skies are sadly not so friendly.