GFamily

That should be 23h 56m 4.1s, the length of the Sidereal day. A relatively minor point, but important should you set your tracker to move at Solar rate rather than Sidereal. That's true for Northern ...

Not sure what you mean. The graph shows the change in altitude of Vega as it rises, culminates and sets as seen from Toronto. Check it out on Stellarium - or over a night's observing.

Afraid I'm not an Ontarian, I just set Stellarium to match your situation. I realised the 'altitude' plot was slightly out in my original image, so I've re-plotted it. The horizontal axis is hours ...

Also remember that you don't need a 'smart' lens, so you don't need Auto Focus Auto Aperture Image Stabilization You don't even need the same brand as your camera body - so you can look for old ...

Interestingly, I thought that, but I then plotted the altitude of Vega for Toronto every hour from rising to setting. Also plotted the rate of altitude change. Vega starts rising at about 5.5 ...

I was watching the NASA TV broadcast of the Eclipse. I was amused to see that the the telescope view from the Griffith Observatory was done with an equatorially mounted telescope. Well, it ...

A very quick unguided photo of this morning's conjunction. 1s exposure using a 102mm f/12.7 Mak and a Canon 1000d body at 1600 ISO. I look forward to seeing much more impressive images

If you have a built in intervalometer, you don't need a shutter release cable; however, it's worth knowing that an external intervalometer can be a lot easier to use than straining to reset your ...

SA is a great place to start, and can get very good results with a 200mm lens, and it is capable of taking much more. A friend used it with his dSLR/TS65 (440mm focal length), with a guide scope ...

It's just a difference in the type of OTG adapter needed, so that shouldn't stop anyone trying it

As an alternative, if your camera is compatible with it, you could consider the free app DSLR Control (for Android), which links your camera via USB to your phone or tablet, and at the very least ...

Just FYI, this compares the result of stacking in Registax vs AS!2 Same source AVI, and the same amount of wavelets applied in Registax after stacking.

Does it shake in all directions or just in one? Does it wobble in the sense that the camera goes up while the counterweight goes down, or does it wobble in the sense that the 'lens' goes up while ...

If you're using a fixed camera on a tripod and you're seeing movement of the horizon on any length exposure, then the problem is the stability of your camera on its mount, not an issue with ...

I've been told that if you use the Sony A7S at high ISO (>100,000 ) you can see the Milky Way clearly in Live View.

I don't see any reason why you shouldn't be able to do drift alignment by using a well centred star and max Zoom on your Live View. I've never done drift alignment myself, so I'm not sure what ...

Celestron sell a 2x Barlow which is combined with a T-Adapter. For visual imaging, you can use the Barlow to increase the magnification of your current eyepieces. The Barlow lens changes the optics ...

With a fixed mount, my advice would be to follow the rule of 500. Basically, this says that you can get away with exposure lengths that are 500 divided by your focal length  - so if you have a 50mm ...

Have you adjusted the Polar Scope so that it is exactly aligned with the RA axis as described in Appendix I of the instruction manual? I ask this because I find that using the Polar Scope allows me ...

Cheap, accurate, decent payload : Pick any two.