Re: [ap-gto] 1200GTO capacity question


Mar 14, 2017

 


----------------------------

#56035 Mar 14, 2017

  I'm looking at telescope options to go into a permanent observatory. I recently acquired a 1200GTO mount which is in very good condition and shows little sign of wear. One of the telescopes under consideration is a 400 mm f/8 R-C in a half-truss tube assembly. The OTA is about 40 kg, 525 mm in diameter and 980 mm long. With a focuser, camera and filter wheel, the total load should be something less than 48 kg, but let's suppose 50 kg to be conservative. This is within the stated capacity for this mount, both in terms of telescope size and mass. I also note that Planewave sells accessories to mount their much heavier 17.5" CDK on a 1200, so evidently they think it can be done. Before I commit to buying anything, I would be interested in any first-hand experiences with a telescope in this class (the 400 mm R-C, not the Planewave) on a 1200-series mount. It seems unlikely that the load would impose risk of damage, however the system must also be reasonably stable in at least light wind conditions to be of use. The telescope and mount will be housed either in a dome or roll-off building with walls which extend at least to the top of the tube assembly.

  Comments, or better yet, pointers to similar system configurations would be most appreciated.

    -- Mike --



----------------------------

#56036 Mar 15, 2017

I have a couple of AP mounts.  I have found  them to be capable of astrophotography up to their stated limits with no problems.  

Alan 



From: "shadowguyaz@... [ap-gto]" ap-gto@yahoogroups.com> To: ap-gto@yahoogroups.com Sent: Wednesday, March 15, 2017 2:32 AM Subject: [ap-gto] 1200GTO capacity question



  I'm looking at telescope options to go into a permanent observatory. I recently acquired a 1200GTO mount which is in very good condition and shows little sign of wear. One of the telescopes under consideration is a 400 mm f/8 R-C in a half-truss tube assembly. The OTA is about 40 kg, 525 mm in diameter and 980 mm long. With a focuser, camera and filter wheel, the total load should be something less than 48 kg, but let's suppose 50 kg to be conservative. This is within the stated capacity for this mount, both in terms of telescope size and mass. I also note that Planewave sells accessories to mount their much heavier 17.5" CDK on a 1200, so evidently they think it can be done. Before I commit to buying anything, I would be interested in any first-hand experiences with a telescope in this class (the 400 mm R-C, not the Planewave) on a 1200-series mount. It seems unlikely that the load would impose risk of damage, however the system must also be reasonably stable in at least light wind conditions to be of use. The telescope and mount will be housed either in a dome or roll-off building with walls which extend at least to the top of the tube assembly.

  Comments, or better yet, pointers to similar system configurations would be most appreciated.

    -- Mike --



----------------------------

#56041 Mar 15, 2017

I have 60lbs with a significant torque arm with an AP 1100. No problems.JK



On Wednesday, March 15, 2017 3:35 AM, "Alan Pryor adpryor1953@... [ap-gto]" ap-gto@yahoogroups.com> wrote:



 I have a couple of AP mounts.  I have found  them to be capable of astrophotography up to their stated limits with no problems.  

Alan 



From: "shadowguyaz@... [ap-gto]" ap-gto@yahoogroups.com> To: ap-gto@yahoogroups.com Sent: Wednesday, March 15, 2017 2:32 AM Subject: [ap-gto] 1200GTO capacity question



  I'm looking at telescope options to go into a permanent observatory. I recently acquired a 1200GTO mount which is in very good condition and shows little sign of wear. One of the telescopes under consideration is a 400 mm f/8 R-C in a half-truss tube assembly. The OTA is about 40 kg, 525 mm in diameter and 980 mm long. With a focuser, camera and filter wheel, the total load should be something less than 48 kg, but let's suppose 50 kg to be conservative. This is within the stated capacity for this mount, both in terms of telescope size and mass. I also note that Planewave sells accessories to mount their much heavier 17.5" CDK on a 1200, so evidently they think it can be done. Before I commit to buying anything, I would be interested in any first-hand experiences with a telescope in this class (the 400 mm R-C, not the Planewave) on a 1200-series mount. It seems unlikely that the load would impose risk of damage, however the system must also be reasonably stable in at least light wind conditions to be of use. The telescope and mount will be housed either in a dome or roll-off building with walls which extend at least to the top of the tube assembly.

  Comments, or better yet, pointers to similar system configurations would be most appreciated.

    -- Mike --


S
e
n
i
o
r
T
u
b
e
.
o
r
g