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Where to start, first image ?


SAW

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Hi,

So I have got a WO61 with Lunt wedge that I use on a alt/az mount, can I do any solar imaging like this ? I've done plenty of dso using my heq5 but not really sure where to start with solar imaging, software etc ? I was going to use my zwo120mm and I have one of these https://www.firstlightoptics.com/moon-neutral-density-filters/baader-single-polarising-filter.html but might be better with https://www.firstlightoptics.com/solar-filters/bsolconti-1.html and https://www.firstlightoptics.com/uv-ir-filters/buvir-1.html

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You have the makings of a GREAT White Light Solar imaging setup there...
I say that, 'cos it is almost exactly the one I use for the purpose myself! :D

It goes without saying you use *proper* SOLAR white light filtering 
+ view / image ONLY via the Lunt Wedge (Obligatory stuff!) right? ;)

FWIW, I have an Altair Astro 66mm ED, which has f/400... rather than f/360mm,
like your WO 61? (More anon re. the latter difference?!?) I also use the excellent
Lunt Solar Wedge! My mount is indeed an HEQ5 and I use EQMod for all (day or
night!) tracking / finding / observing / imaging. It "works for me" as they say! :cool:

Data Acquisition software is the first thing?!? I use the ever popular Firecapture
with my ASI120MM. My USB2 Netbook runs at about 18fps and I generally give
White Light images about 2 min. of Video recording time  -- About 2000 events
to  Stack. I use Autostakkert for stacking, post-process via Registax6, GIMP etc. 

There are a few potential "Gotchas", but the great thing to do is to TRY it out!

For what it's worth (and from memory!): You may find the ASI120MM a bit too
sensitive for solar imaging - Particularly with the Solar Wedge! I plan to invest
on a polarising Filter for VISUAL work (I to do very little myself) at some stage. 
BUT for  imaging I find either a Baader ND 2.0 Filter "about right" (plain White
Light) OR the Baader Solar Continuum for "more contrast" at similar exposure!

Your f/360mm should allow you to *FIT* a FULL Disk on an ASI120MM chip...
If not, I have some ideas (and use) a typical 0.5x focal reducer to GET it to! :evil4:
I find the scope aperture plus "local seeing" allows me to Barlow the image by
about 3x for closeups of (Not so many! lol) Sunspots. I use the Antares "Twist 
Lock" series, but let me not stifle your own creativity further? Have Fun etc. :) 

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