New to me Mach 1!
Posted 30 May 2013 - 12:09 AM
Posted 30 May 2013 - 12:37 AM
Posted 30 May 2013 - 12:52 AM
seems like if it was in any park position the right thing to do is simply "resume from park", since the mount should know where it was parked.
Posted 30 May 2013 - 01:05 AM
Posted 30 May 2013 - 02:23 AM
The native PE is well-known. Mine does about 6" p-p. After PEC training that drops to < 1" p-p.
I have numerous 10- and 20-minute guided subs. 20 minutes is too much for unguided with my not-so-good polar alignment (at 600mm).
The hand controller does seem a bit ancient, and the interface isn't so good compared to even the humble Nexstar. But it's vacuum fluorescent and doesn't dim in cold weather. And it's very beefy. The thing would outlast most contemporary electronics gear.
Posted 30 May 2013 - 10:07 AM
the hand controller seems fine to me. i agree it is very robust. i don't care that much though because i drive the mount with ASCOM - wifiscope + SkySafari and AstroTortilla.
Posted 30 May 2013 - 12:57 PM
Posted 30 May 2013 - 03:27 PM
Posted 30 May 2013 - 04:36 PM
And having more then one line of text gives you much more info. I actually learn the sky with it.
Posted 30 May 2013 - 05:40 PM
Posted 30 May 2013 - 07:08 PM
I'd tend to say what you really need to do is THINK REAL HARD before using a Sync command.
The original Sky Safari sent Sync instead of RCAL when you pressed the "Align" button on the mount control. That was what I had done just before the collision. So, I talked to Tim at Southern Stars as well as AP, and now Sky Safari is fixed so it sends RCAL instead of Sync.
For Bigj, who apparently hasn't discovered Google:
Posted 30 May 2013 - 07:26 PM
You're right about the "just is" alignment... it does require that your polar alignment be well-nigh perfect. But it's nice that the AP GTO controller follows the principle of least astonishment.
Posted 31 May 2013 - 02:26 AM
Thanks for googal tip. I still would like raw see data from a new mount. The 8.4 arc second was nice but not to AP standard. I was hopping to see 6 arc secounds or better.
Posted 31 May 2013 - 06:32 AM
I don't know how anyone could regret switching from Celestron electronics to Astro-Physics. The circuit boards are better, the hand controller is much better, and the commands are easier to use. I start from Park 3, Goto a single star, Synch, and off I go. Keying in a database object or a set of RA/Dec coordinates couldn't be easier.
Six years ago, when I first got on the A-P waiting list, a friend told me that if I ever tried the A-P hand paddle I would never be happy going back to Celestron, Synta, or Gemini - mounts I had used previously. I have to agree that he was right.
Posted 31 May 2013 - 07:04 AM
My Mach 1 celebrated its 4th birthday a few weeks ago and it's still the best investment I ever made in astronomy.
Yeah, I'd say Ron has that just about right. I think our mounts must be from the same litter.
Posted 01 June 2013 - 07:13 AM
I think AP is a good mount but technology is old, look at the controller its dated about 20 years
The AP HC is excellent! The actual AP HC is rugged, handles extreme low temps well, and has nice 4 line vacumn-fluorescent display. You must be referring to the software? Sure, it lacks some of the bells and whistles of the newer mounts. Actually, it only lacks in software for Polar Alignment. This is a nonissue since the new RAPAS arrived. The alignment now literally takes 2 minutes. Modelling, I don't need it with my setup. Simply Recal on a star and it's set to go.
I'm willing to bet most AP mount owners are imagers. The AP software works extremely well in that regard. The meridian delay is fanatastic! My Mach 1 is the easiest mount ever to operate, no muss no fuss.
Posted 01 June 2013 - 08:46 AM
This data is about 3 worm cycles for the fundamental, and after PEM. The only wrinkle is, data was captured with a finder-guider, so the pixel scale is very poor.
Raw PE (about 5" p-p) - according to Ray only the fundamental, 1st, and 2nd harmonics exist and can be corrected, so only those are checked:
After one round of PEM and two rounds of PEM refinement:
I used to get a better figure (0.42" p-p) but the above is what I'm getting now.