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blackdragon72

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About blackdragon72

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    CA, USA
  1. Does anyone know if FeatherTouch HSM motor is bipolar and unipolar, and the inputout of RJ45?
  2. I have a moonlite controller and am wondering if it can be use to control Feathertouch/Opetc HSM motor? It is not clear to me whether HSM is bipolar or unipolar motor?
  3. Your image was far better than mine so it can not be the same one.
  4. The exposure is 5s, so polar alignment, guiding issue can be ruled out.
  5. Actually mine has bad star shapes on 3 corners. Eg, https://drive.google.com/open?id=0B-QlWQSc_Fi0bXF5ZVFyX0NHb1U top left looks fine, bottom right is the worst which looks like just regular elongate star, the other two look like field rotation, so looks to me system is tiled from top left to bottom right.
  6. I just uploaded JPG file, does you image look similar or worse than mine? I can try to do some long exposure images and stack.
  7. Thanks! I have contacted the dealer to analyze my images. Hopefully I will get reply soon.
  8. I did before, it did not make any different when pointing to different part of sky, so it is unlikely the play in focuser.
  9. 1. FSQ85 -> 72mm thread extension -> 55.9mm thread adapter -> customized T2 adapter -> 20mm T2 extension -> CCD FITS: https://drive.google.com/open?id=0B-QlWQSc_Fi0LXZXcDdBREVySVU JPG: https://drive.google.com/open?id=0B-QlWQSc_Fi0bXF5ZVFyX0NHb1U 2. FSQ85 -> 72mm thread extension -> 55.9mm thread adapter -> customized T2 adapter -> 40mm T2 extension -> CCD FITS: https://drive.google.com/open?id=0B-QlWQSc_Fi0MFBmUEExS0Nwb0k JPG: https://drive.google.com/open?id=0B-QlWQSc_Fi0RkJNQW1tT1lVLUU 3. FSQ85 -> 72mm thread extension -> 55.9mm thread adapter -> customized T2 adapter -> 40mm T2 extension -> DSLR FITS: https://drive.google.com/open?id=0B-QlWQSc_Fi0NTNrRUllcE9hSG8 JPG: https://drive.google.com/open?id=0B-QlWQSc_Fi0Q0FodDg3MkpVXzQ
  10. I got my new FSQ85 sometime ago, and have been struggling with elongated star issue. Basically the star at different corners show different shapes. I did some tests this week without CAA, trying to figure out what the problem is. 1. FSQ85 -> 72mm thread extension -> 55.9mm thread adapter -> customized T2 adapter -> 20mm T2 extension -> CCD https://drive.google.com/open?id=0B-QlWQSc_Fi0LXZXcDdBREVySVU 2. FSQ85 -> 72mm thread extension -> 55.9mm thread adapter -> customized T2 adapter -> 40mm T2 extension -> CCD https://drive.google.com/open?id=0B-QlWQSc_Fi0MFBmUEExS0Nwb0k 3. FSQ85 -> 72mm thread extension -> 55.9mm thread adapter -> customized T2 adapter -> 40mm T2 extension -> DSLR https://drive.google.com/open?id=0B-QlWQSc_Fi0NTNrRUllcE9hSG8 From images, clearly there is some tilt. I think #1 and #3 are more severe because tilt is on diagonal direction. Looks to me that either optical or focuser is not aligned (assuming all threaded adapters are aligned), because tilt on #1 and #3 is same wrt star position. #2 is not severe as tilt is more up-down direction if my theory is correct. The focus is done on the brightest star using mask for all images. Has anyone had the similar issue with FSQ85 before? What is the most probable cause?
  11. I managed to get my two channel focuser driver up. It is (including visual studio project) available here: https://sourceforge..../?source=navbar It uses one Arduino Nano to control two focusers. The protocol is based on Moonlite, and the main difference is that TempComp is handled by Arduino, not the driver (which I believe Moonlite does). I have not tested it fully since I have only one telescope, on which one channel focuser works fine. You should be able to connect the focuser via Moonlite driver directly, but my driver supports more commands than Moonlite so it wont talk to Moonlite focuser (it could be done by removing those additional commands). The current sketch assumes uni-polar stepper, but I think you can change it to support bi-polar. It supports two channels, with 2 manual control button; it also has one DS18B20 sensor. It assumes that when button is pressed, the input is 0, when release input is 1. #define BUT_READING_RELEASED 0 #define BUT_READING_PRESSED 1 #define PIN_OUTPUT_MOTOR1_CH0 2 // Motor pin #define PIN_OUTPUT_MOTOR2_CH0 3 #define PIN_OUTPUT_MOTOR3_CH0 4 #define PIN_OUTPUT_MOTOR4_CH0 5 #define PIN_INPUT_BUT_FW_CH0 7 // Maunal movement button #define PIN_INPUT_BUT_BW_CH0 8 #define PIN_OUTPUT_MOTOR1_CH1 9 // Motor pin #define PIN_OUTPUT_MOTOR2_CH1 10 #define PIN_OUTPUT_MOTOR3_CH1 11 #define PIN_OUTPUT_MOTOR4_CH1 12 #define PIN_INPUT_BUT_FW_CH1 14 // A0 Maunal movement button #define PIN_INPUT_BUT_BW_CH1 15 // A1 #define PIN_INPUT_SENSOR 6 // Tempeature sensors
  12. I managed to get my two channel focuser driver up. It is (including visual studio project) available here: https://sourceforge.net/projects/arduinodualchannelascomfocuser/?source=navbar It uses one Arduino Nano to control two focusers. The protocol is based on Moonlite, and the main difference is that TempComp is handled by Arduino, not the driver (which I believe Moonlite does). I have not tested it fully since I have only one telescope, on which one channel focuser works fine. You should be able to connect the focuser via Moonlite driver directly, but my driver supports more commands than Moonlite so it wont talk to Moonlite focuser (it could be done by removing those additional commands).
  13. Dave, I am thinking to support 2nd focuser with Arduino, but I am stuck with ASCOM driver, do you have any experience with ASCOM local server? I posted a question on ASCOM group but did not receive any reply.
  14. I tightened thumb screw, it did not solve the problem. I am not sure if tightening set screws will help or not.
  15. I think I did not make myself clear. My motor has enough torque to turn fine focus knob, it is the knob which fails to rack focuser in, I guess it just can not handle the load. I need to find another motor to work with coarse focus knob - the current one does not have enough torque. I confirmed with manual focus that coarse focus knob can rack in/out without any issue.
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