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From AST Optics selling my mini guiding system that i used for my Redcat51 , i have used it also with my Esprit 100 and had excellent guiding results.
There is a nice review here if someone wants to read :
Lens: f=100mm F3.5 CCTV objective - made in Japan
Adjustment: by ballhead - with reliable clamping
Dovetail: compatible with most finder shoes
True field of view: 2.9° x 3.8°
Maximum guidable focal length: 1000 mm
Focusing: via lens cell
Connection to camera: C-Mount
Lens filter thread: M30.5mm P=0.5
Weight: 79 grams
Length of the objective: 44 mm
PRICE : £100 (selling the mount and the CCTV lens not the camera)
Paypal accepted buyer pays the fees
I will cover the postage expenses
Hi guys, it's my first post here, so Hello!
My synscan goto upgrade started to act like in this video of mine SynScan GOTO Skipping after being disassembled for few weeks in the closet. There were no such problems before.
When it slews at rates above x3 everything is fine and smooth but as soon as it starts tracking at x3, it skips steps or something like that.
My setup is eq3-2 on alu and SW 150/750 with Canon 700D attached.
Thanks in advance for any clues or ideas!
I have guiding problem with the following guider setup: 9x50 finder + ZWO ASI 120mm mini + PHD2.
The imaging scope is a 6' newtonian + canon dslr on a HEQ5, driven by a laptop via diy EQDIR cable.
When the mount is set up and running correctly, polar aligned and all... I connect the guider camera
and mount with phd2. All nice and easy, I run a calibration, then it starts to guide. All seems ok.
Then I am starting to take pictures. The first seems OK, then the second have the star trails...
I check phd2 and there is a message: the camera (ASI) did not take a picture for "xy" seconds so it is disconnected.
Grrr.... I reconnect try to set up a longer period for "xy" in the settings as mentioned in the message.
And all the same again and again. Whatever I add for connection timeout for the camera, it just reaches that
and disconnect the camera.
PHD + philips toucam has worked for me flowlessly. I changed to PHD2 because I gave myself a birthday present,
the little ZWO camera. (and PHD did not recognize it)
Do you have any idea what can be the problem? I will contact PHD2 help also, but maybe somebody had already
the same problem and figured out how to overcome. I am almost sure I make some dumb mistake in the PHD2
software settings, however I tried to change only what was needed.
I have an EQ5 telescope mount which i use for astrophotography. I have modified it with a motorised RA axis using a bipolar stepper motor - my thread for the build is here .
I want to expand the mount's tracking ability by motorising the DEC axis and using a guide scope/camera. I generally use the mount in fairly remote locations so would like to use a raspberry Pi for portability.
I understand that I'll need to use a Raspberry Pi Camera Module for the guide camera.
The capability I want is:
1. guide the mount along RA and DEC axes using a guide star as feedback
2. track the mount using the RA axis only, and if possible continuously take 20-30 second exposures on the guide camera (this functionality is optional, but would assist in polar alignment of the mount)
I don't want any GOTO capability. I am very new to RPi and need some help:
- do I need to write code for this, or is there existing programming available for what I want to do?
- is it possible to avoid the use of screens (in the field)? My preferred option would be to flick a switch to start and stop the guiding, with another switch for alignment mode (or something simple like this).
- do I need to use any particular stepper motors/drivers for raspberry Pi? I'm using a bipolar stepper motor running quarter steps, with an A4988 stepper driver
- is the RPi 3 Model B+ the unit I should buy?