What do I need to use the Askar 80ED for visual observing?
For visual use, you will need a diagonal and eyepieces. The telescope's focuser accepts standard 2-inch accessories, so a 2-inch star diagonal is recommended. For 1.25-inch eyepieces, Askar sells an optional 1.25" adapter, along with 8mm and 20mm eyepieces and a 1.25-inch erecting prism.
Do I need a field flattener for imaging with the Askar 80ED?
Yes. Like most refractors, the Askar 80ED requires a field flattener or focal reducer/flattener to achieve sharp, point-like stars across an entire imaging sensor. Askar makes three optional imaging accessories (1.0x, 0.85x and 0.7x) for this telescope.
How does the Askar 80ED frame large targets like the Andromeda Galaxy (M31)?
At 560mm an APS-C sensor (23.5x15.6mm) covers about 2.4 x 1.6 degrees, which frames the bright core and inner disk of M31 but not its full length. The optional 0.85x or 0.7x reducer widens the field.
Does the Askar 80ED support full-frame cameras?
Yes. The manual states that the Askar 80ED is specifically optimized for APS-C sensors while also supporting full-frame imaging. Askar's price list gives the three imaging accessories an APS-C image circle, so expect APS-C to be the best-corrected format.
What does the 0.7x reducer do for imaging the North America Nebula (NGC 7000)?
The optional 0.7x reducer brings the Askar 80ED to f/4.9, so the same exposure takes about half the time needed at f/7, and the field widens. Askar's own gallery includes an NGC 7000 image taken with the 80ED and the 0.7x reducer.
How do I connect a DSLR or dedicated astronomy camera to the Askar 80ED?
To connect a camera for imaging, you must use one of the optional Askar flatteners or reducers. These accessories have a 55mm back focus from the base of the M48 male thread. A DSLR can be used with a camera adapter, and an astronomical camera connects through extension adapters.
Is an electronic focuser compatible with the Askar 80ED?
Yes. The focuser base has additional screw holes for an electronic focuser. The manual's steps: remove the thumb screw and the coarse adjustment knob (2mm wrench), fit the motor bracket with standard M4 screws, choose a 5 to 6mm flexible coupling, insert the EAF and lock the screws.
How do I attach a guide scope to the Askar 80ED?
The Askar 80ED offers two convenient options for mounting a guide scope. You can attach it to one of the two finder bases on the sides of the lens tube, or mount it to the slotted handle on top of the tube rings with screws. Askar's recommended accessories include a 32mm guide scope.
Is it safe to look at the Sun with the Askar 80ED?
Absolutely not. The user manual contains a critical safety warning in all caps: "DO NOT LOOK AT SUN THROUGH TELESCOPE. IT WILL CAUSE IRREVERSIBLE DAMAGE TO YOUR EYES."
