EdgeHD/CGEM tracking - AstroGab2024-03-28T22:15:15Zhttp://astrogab.ning.com/forum/topics/edgehd-cgem-tracking?commentId=6354305%3AComment%3A73015&feed=yes&xn_auth=noHi Lisa, I just came across t…tag:astrogab.ning.com,2012-03-23:6354305:Comment:1086132012-03-23T03:25:42.398ZKevin Galkahttp://astrogab.ning.com/profile/KevinGalka
<p>Hi Lisa,<br/> I just came across this discussion, have you been able to solve the issues you were having?</p>
<p>Kevin</p>
<p>Hi Lisa,<br/> I just came across this discussion, have you been able to solve the issues you were having?</p>
<p>Kevin</p> Please stop replying to my po…tag:astrogab.ning.com,2012-03-20:6354305:Comment:1085062012-03-20T22:01:01.490ZLisa Kaminskihttp://astrogab.ning.com/profile/LisaKaminski
Please stop replying to my posts. You are rude and unhelpful. You can reply when you calm down and stop rudely telling people how they are doing things wrong. Who in the hell are you anyway. I dont think your character fits this forum.
Please stop replying to my posts. You are rude and unhelpful. You can reply when you calm down and stop rudely telling people how they are doing things wrong. Who in the hell are you anyway. I dont think your character fits this forum. I'm glad it's working now. If…tag:astrogab.ning.com,2011-10-02:6354305:Comment:857612011-10-02T02:21:54.402ZGreg Marshallhttp://astrogab.ning.com/profile/GregMarshall
I'm glad it's working now. If you stick with using the hyperstar setup it will probably work well. However, there are some issues with guiding the CGEM that might still be waiting to trip you up. Watch for failures in guiding the DEC axis.<br />
<br />
I would agree with the comments that 28 pounds is a lot for this mount (for astro-photography, that is), but there are many factors affecting how well a mount will perform. I used a CGEM until very recently and my whole imaging system weighed about 28 pounds…
I'm glad it's working now. If you stick with using the hyperstar setup it will probably work well. However, there are some issues with guiding the CGEM that might still be waiting to trip you up. Watch for failures in guiding the DEC axis.<br />
<br />
I would agree with the comments that 28 pounds is a lot for this mount (for astro-photography, that is), but there are many factors affecting how well a mount will perform. I used a CGEM until very recently and my whole imaging system weighed about 28 pounds - maybe more. I got it to work, but it was not easy.<br />
<br />
At f/2 an 11 inch scope has a focal length of 559mm, which is quite reasonable for the CGEM. At prime focus it is 2800mm, which is way beyond reasonable for long exposures on this mount. Even with excellent guiding, the residual errors in the RA drive train would result in very blurred images. Do you have an autoguider? If…tag:astrogab.ning.com,2011-09-23:6354305:Comment:845612011-09-23T13:56:01.066ZLisa Kaminskihttp://astrogab.ning.com/profile/LisaKaminski
Do you have an autoguider? If not, I would think that would help. I have not gotten advanced enough to mess with the periodic error controls. I do know that doing a scope weight balance, two star alignment and the polar alignment helped get rid of the trails at least up to 30 seconds for me. I haven't even tried anything longer than that.
Do you have an autoguider? If not, I would think that would help. I have not gotten advanced enough to mess with the periodic error controls. I do know that doing a scope weight balance, two star alignment and the polar alignment helped get rid of the trails at least up to 30 seconds for me. I haven't even tried anything longer than that. I actually think I have a foc…tag:astrogab.ning.com,2011-09-23:6354305:Comment:845422011-09-23T02:33:30.323ZLisa Kaminskihttp://astrogab.ning.com/profile/LisaKaminski
I actually think I have a focal reducer. I will try this and see what happens. I did the polar align and it fixed the problem. I appreciate the advice!
I actually think I have a focal reducer. I will try this and see what happens. I did the polar align and it fixed the problem. I appreciate the advice! I figured it out. It was the…tag:astrogab.ning.com,2011-09-23:6354305:Comment:844382011-09-23T02:32:06.835ZLisa Kaminskihttp://astrogab.ning.com/profile/LisaKaminski
I figured it out. It was the polar alignment. Basically...I wasn't doing it. :)<br />
It made all the difference.
I figured it out. It was the polar alignment. Basically...I wasn't doing it. :)<br />
It made all the difference. it's a heavy load for that mo…tag:astrogab.ning.com,2011-08-10:6354305:Comment:753422011-08-10T15:36:19.012ZCharles Dunlophttp://astrogab.ning.com/profile/CharlesDunlop
it's a heavy load for that mount, no matter what celestron says, but you shouldn't be slipping totally off like you are. Allstar alignment, you aren't polar aligned or else you aren't well balanced. Did you try rebalancing? Instruction manual tells you how to appropriately balance.
it's a heavy load for that mount, no matter what celestron says, but you shouldn't be slipping totally off like you are. Allstar alignment, you aren't polar aligned or else you aren't well balanced. Did you try rebalancing? Instruction manual tells you how to appropriately balance. So based on what Celestron sa…tag:astrogab.ning.com,2011-08-03:6354305:Comment:730592011-08-03T01:26:49.542ZLisa Kaminskihttp://astrogab.ning.com/profile/LisaKaminski
So based on what Celestron says the CGEM is capable of a 40 lb payload. The 11" SCT is 28 lbs. and my equipment added can't be more than 3-4 lbs extra. I just can't see that being the reason why the tracking is slipping.
So based on what Celestron says the CGEM is capable of a 40 lb payload. The 11" SCT is 28 lbs. and my equipment added can't be more than 3-4 lbs extra. I just can't see that being the reason why the tracking is slipping. So, I don't know if the align…tag:astrogab.ning.com,2011-08-03:6354305:Comment:733112011-08-03T01:24:46.512ZLisa Kaminskihttp://astrogab.ning.com/profile/LisaKaminski
So, I don't know if the alignment is my problem or not. I follow the two star align procedures and can slew to any of the objects afterwards that I want, and they show up centered. They just don't stay centered for photos. I guess I am having trouble with the idea of tracking an object being directly related to the alignment procedure.
So, I don't know if the alignment is my problem or not. I follow the two star align procedures and can slew to any of the objects afterwards that I want, and they show up centered. They just don't stay centered for photos. I guess I am having trouble with the idea of tracking an object being directly related to the alignment procedure. Hi Lisa, here's another resou…tag:astrogab.ning.com,2011-08-01:6354305:Comment:730222011-08-01T19:19:35.667ZMarc Bastihttp://astrogab.ning.com/profile/MarcBasti
Hi Lisa, here's another resource for the Celes. PA routine it's a bit clearer than the Celes. manual (I think).<br />
<a href="http://f1.grp.yahoofs.com/v1/EGs2TnKU2NglFyN-qVLAxGLkcFFmHRyVGiuWgT1my3D-6OW1dgpc9GF8B1MQivDB1Dy1HJULp9nMYwqIBCoq87ljKuLEFTiwjw/Enhanced%20CGEM%20PA%20instructions.pdf" target="_blank">http://f1.grp.yahoofs.com/v1/EGs2TnKU2NglFyN-qVLAxGLkcFFmHRyVGiuWgT1my3D-6OW1dgpc9GF8B1MQivDB1Dy1HJULp9nMYwqIBCoq87ljKuLEFTiwjw/Enhanced%20CGEM%20PA%20instructions.pdf</a><br />
If for some reason…
Hi Lisa, here's another resource for the Celes. PA routine it's a bit clearer than the Celes. manual (I think).<br />
<a href="http://f1.grp.yahoofs.com/v1/EGs2TnKU2NglFyN-qVLAxGLkcFFmHRyVGiuWgT1my3D-6OW1dgpc9GF8B1MQivDB1Dy1HJULp9nMYwqIBCoq87ljKuLEFTiwjw/Enhanced%20CGEM%20PA%20instructions.pdf" target="_blank">http://f1.grp.yahoofs.com/v1/EGs2TnKU2NglFyN-qVLAxGLkcFFmHRyVGiuWgT1my3D-6OW1dgpc9GF8B1MQivDB1Dy1HJULp9nMYwqIBCoq87ljKuLEFTiwjw/Enhanced%20CGEM%20PA%20instructions.pdf</a><br />
If for some reason this link is messed it's on the yahoo cgem users group- files-enhanced PA routine. This other site is good to check out, good bits of info.<br />
<a href="http://www.nexstarsite.com/" target="_blank">http://www.nexstarsite.com/</a><br />
We're all willing to help (cos we all needed it at one time). Marc