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I am thinking of getting a Lunt 50mm scope. I want to image as well as observe. I am thinking I could put my ZWO on the scope and capture video. My question is, does focal length in a solar scope relate to the FoV as it does for a non-solar scope? The field of view calculator (http://www.12dstring.me.uk/fovcalc.php) suggests I could just about get a full disc with a focal length of 350mm (the 50mm Lunt), but not with a focal length of 500mm (the 60mm Lunt). Is my logic correct?
So, I am going to take my first steps into observing and hopefully imaging the sun, and get myself a filter for the telescope, just so that I have something to do, when I am working nightshifts, or the weather is bad at night. From what I can see, all I would need is a filter like this one https://www.firstlightoptics.com/solar-filters/astrozap-baader-solar-filter.html. Is that so, or is there anything else that you would highly recommend that I get, and why? My telescope is a Skywatcher 150PDS on a Celestron AVX mount.
On the same time, I am looking at buying a baader hydrogen alpha 3mm filter for imaging. Is this also something I could use for observing, or it is solely for imaging? Just curious.
Any comments, tips, advice would be very much appreciated, as I would rather not damage either my eyes, or more importantly my equipment! (jk)
Just caught up with The Sky at Night from Sunday 12th Aug. Subject Coronal Mass Ejections from the Sun.
Must admit I am slightly disappointed, if I am even allowed to criticise such a National Instution. ?
First, the episode subtitle, "Death Star" . . . Groan.
Then the intro from Maggie A-P included the statement that a CME's "could devastate our technological world . . "
She said something similar at the end. IMHO neither statement was backed up by the rest of the episode.
The boffins suggested some unquantified damage to power grids & satellites "which might have hardening or redundancies"
So I was left with the impression of some Millenium Bug style media hype. Would definitley be great aurorae though.
What do you think?