I am a newcomer and just started Astrophotography. Looking forward to being a part of this awesome community. Thanks!!
Uwe Deutermann:
Using Bahtinov mask for a scope without autofocuser (which I ordered already for the new one 😊). Any brighter star that is currently visible from your spot will do. I found out though that the brightest stars are too bright to see the spikes perfectly, so a mag 3 star would be best. Do you use a Bahtinow mask? Btw. From Florida too, JAX area.
Subhadip Chatterjee:Uwe Deutermann:
Using Bahtinov mask for a scope without autofocuser (which I ordered already for the new one 😊). Any brighter star that is currently visible from your spot will do. I found out though that the brightest stars are too bright to see the spikes perfectly, so a mag 3 star would be best. Do you use a Bahtinow mask? Btw. From Florida too, JAX area.
I have a Bahtinov mask built into the lens hood of the WO Z73 telescope. But did not use it yet as the ZWO ASIAir Pro along with the ZWO EAF did a good job autofocusing. My initial struggle was to use the Go To function to go to a named star for focusing. As I am not familiar with the star charts yet, I did not know which Star names to Go To that will be suitable for focusing on. If you happen to remember which star you used for focusing from the Jax area - let me know. BTW - I am from the Tampa area.
Bruce Donzanti:
Uwe can certainly tell you which ones he uses but any star works with the mask. I am located just north of Orlando and I use auto-focus from SharpCap but I have used the Bahtinov mask for many years. The key is to get a star not too far from the object of interest as the sky changes from area to area. And like Uwe said, if a star is too bright you might have trouble distinguishing the 3 spiked lines and if a star is too faint, you might have trouble seeing the lines. It also depends on your scope and camera. You need to experiment. Just remember a couple of things: 1) pick a star not too far from the object of interest and 2) check the focus over time as temperature changes (like 2 degrees or more) can change your focus. An example, if looking at the great Orion Nebula (M42), a good star to choose can be Saiph. Rigel might work but is very bright. Just try it and see. I also suggest you get star charts and get familiar with star locations. It will help you greatly. That is how we all learn