Polaralignment jumps during plate solving
Posted: Mon Jan 11, 2021 4:25 pm
Hi everybody,
sorry for my bad english. I am trying to polar align my mount. I´ve a NEQ6 with an Canon EOS 200D + 135mm Photolense.
Yes, get a DSLR working to polaralign with sharpcap, isnt easy, but i managed it. With an exposure of 6sec and an ISO of 6400 i get more than enough stars (45 stars). With the transfer delay between my camera and my laptop i need about 10-15sec. per pic.
My problem is now, that my platesolving jumps +-5arcmin during the alignment. That means, without any adjustments i can´t get closer to zero. Sure, i get values near zero, but they are jumping between the solvings.
E.g. sharpcap says iam inaccurate and have to move 5arcmin to left. So if iam doing nothing, this value jumps in a range of 10arcmin.
The best option i have and how i am doing it now, is to adjust as long as i get in a range of +-5arcmin. I have to wait about 10 minutes and watch the values before i could do another move, just to see where my middle point of 10arcmin is. The values are jumping randomly. All is very stable, nothing is moving. This costs me more than 90min for my polar alignment and at the end i dont know how accurate i am, until i take a pic with 10min exposure.
What iam doing wrong?
Yes, i will buy a guidingscope in the next few weeks, but what if this scope doesnt fix my problem?
sorry for my bad english. I am trying to polar align my mount. I´ve a NEQ6 with an Canon EOS 200D + 135mm Photolense.
Yes, get a DSLR working to polaralign with sharpcap, isnt easy, but i managed it. With an exposure of 6sec and an ISO of 6400 i get more than enough stars (45 stars). With the transfer delay between my camera and my laptop i need about 10-15sec. per pic.
My problem is now, that my platesolving jumps +-5arcmin during the alignment. That means, without any adjustments i can´t get closer to zero. Sure, i get values near zero, but they are jumping between the solvings.
E.g. sharpcap says iam inaccurate and have to move 5arcmin to left. So if iam doing nothing, this value jumps in a range of 10arcmin.
The best option i have and how i am doing it now, is to adjust as long as i get in a range of +-5arcmin. I have to wait about 10 minutes and watch the values before i could do another move, just to see where my middle point of 10arcmin is. The values are jumping randomly. All is very stable, nothing is moving. This costs me more than 90min for my polar alignment and at the end i dont know how accurate i am, until i take a pic with 10min exposure.
What iam doing wrong?
Yes, i will buy a guidingscope in the next few weeks, but what if this scope doesnt fix my problem?