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I'm totally New to this hobby and i'm having trouble understanding something in stellarium.
I have ordered (not recieved) a Sky-Watcher Explorer 150PDS, which has a 25mm eyepiece 50degrees FOV as a default.
I also have a Nikon D810.
I wanted to get an idea of what my field of view would be with the 25mm eyepiece (30x on 750mm focal length),
and also what it would be With my Nikon D810 mounted shooting prime Focus - no eyepieces.
What surprised me was that it wasnt much difference between the frame and size of the object i get with 30x magnification (25mm eyepiece), and what i get with the Nikon D810 mounted.
I dont get this. What magnification do i get With my DSLR mounted with no eyepiece?
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?
I am going to upgrade to the skywatcher 250/1200 pds telescope and i can't decide which mount i should get.
The main (only) purpose is astrophtography and i am considering either the eq6-r- pro or the cem60
The cem60 can carry more weight but is also more expensive, my inner debate now is about if it is worth it
What's you take on it?
Im having issues regarding dew during colder nights while imaging. I’m aware of how to solve the issue of dew forming on front elements of scopes/lenses using dew heaters, however I’m also concerned with the dew that forms on my non-weatherproof DSLR body and imaging laptop. Does anyone have any suggestions on how to combat this?
The group I am part of, called The Flame Trench, recently got a lot of interest in building a remotely accessible AP setup for people who follow us to get involved with. We'll be looking into using it for a lot of outreach, especially with a second telescope carrying out some live observing. More info on the build can be found here.
I thought I'd make a thread to show the build as we start to get hardware in and watch it progress!
Currently we have a Celestron 6SE w/ EQ-wedge, and a canon DSLR - looking at hooking that up to some web tools to enable some live observations to get the outreach part kicked off early. We'll be looking at somewhere to make the setup semi-permanent or entirely permanent once it's built.
I've attached our planned kitlist for the AP setup:
Thanks for having a look ?