Date
1 - 8 of 8
APPM for single target #APCC #Mach2GTO
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David Johnson
Just received my Mach2 and very happy with it. Until I get a permanent setup, I set up and break down my system just about every time I use it. I have APPM working, but I was thinking last night that since I tend to have one imaging target all night, I really don’t need a model for the whole sky and should be able to save considerable time by densely modeling just along the declination of the target. Can I please get some tips for using APPM for this kind of situation? Thanks.
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Worsel
David
There have been posts in the post showing that building a model along the declinaton of the single object works well. See lengthy thread at https://ap-gto.groups.io/g/main/topic/77675005 In addition, Ray Gralak is working on an upgrade to APPC Pro that will include declination-arc tracking that is very accurate. I defer to Ray for further info on timing for this. Bryan
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David Johnson
Thanks for the info. My concern is what would happen outside the modeled area. As someone who has done models myself in a different area, I just want to make sure there are not extrapolation errors outside the modeled area. I might need to slew to those areas for some reason. Bottom line is I assume the correction is zero outside the modeled area?
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Richard Schiek
I'm in the same boat. I don't have a permanent setup so I haven't used APPM as I had hoped. But being able to build a model around a given object or point the in sky would be very useful to me if it improves tracking accuracy.
Rich
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David Johnson
What I’m going to try tonight if I don’t hear anything is the following. My target’s declination is about +13 degrees. I plan to densely map points from +10 to +20 Dec all across the sky.
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I have had excellent results with doing two and three line APPM map runs which bracket the declination of the target for the night.
There was a discussion on this last summer - https://ap-gto.groups.io/g/main/topic/point_mapping_strategies_for/74888714?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,600,74888714 -- Dean Jacobsen http://astrophoto.net/wp/ Image Gallery - http://astrophoto.net/wp/image-gallery/ Astrobin Image Gallery - https://www.astrobin.com/users/deanjacobsen/ Amateur Radio Call Sign - W6DBJ
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David Johnson
Thanks. I’m going to try it tonight.
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David Johnson
Here’s what I did. Seems to work fine.
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