Lovely captures Rainer!

Very best,

Unfortunately its just a business to the business people. The same way medicine is just business for a supplier, but required for the end-user. As we measure ourselves in the billions, each individual matters less to larger entities like corporations, or business in general. I hope they all survive....

Great discs Ronnie, love some CaK!

Very best,

Excellent Franco, nice to see a real spot again!

Very best,

Excellent Salvo, haven't seen an umbra/penumbra in a while!

Very best,

Nice Paul, good to see a spot!

Very best,

Hey all, It rained all day yesterday, but today a cold front came through and its clear so far. I used the time to do a quick video tutorial on my workflow for acquiring data that I process into images later. FireCapture is the software I'm using specifically because it allows real time flat calibra...

Hi Marty, You have added the filter precisely where I tried and found the etalon moved backwards by the thickness of the filter housing. Not sure this matters but I just preferred a more stealthy filter setting which did not push the fittings apart. Thanks, Ideally I will put the filter through the...

Thanks, Here's what I did. Nothing permanent. Worked it seems from my test on the sun both visually and with camera. After I test more later on a day with good enough weather, I will determine a more permanent and stable way to set the GPC here and keep it centered without "luck." The outer ring and...

Ok, so I got my 30 seconds to test it finally. Sheesh had to wait through a lot of clouds. It was able to focus with room to spare. Contrast was great. Visible detail was great. Image scale definitely was increased (finer). Seems to be working? I didn't have to mod the AOK Swiss adapter. I just plac...

Wonderful captures Brian!

Very best,

Great discs Rainer!

Very best,

Great discs Pedro, love CaK!

Very best,

Lovely disc Mark!

Very best,

If your telescope you are using it with has 16cm backfocus or more, why would you put the glasspath more to the front? Just mount it in the nosepiece of and right before the etalon. Hi Bart, So my front collimating lens is currently extended forward so that I don't have to bother with shortening an...

I think I found one that does it with one adapter:

https://www.ebay.com/itm/M48x0-75-male- ... Swx4BdnirK

Very best,

Ok, maybe this will work. Any confirmation would be awesome: This: https://www.highpointscientific.com/zwo-t2-to-125-filter-adapter-t2-125?utm_source=google&utm_medium=cse&utm_term=ZWO-T2-125&gclid=Cj0KCQiAmZDxBRDIARIsABnkbYR0c_5CLCpcnPlb7e92TKpV4zMbhwjM2sK_SHkqxYDeOHKQw0crjSwaAloTEALw_wcB With This...

Hrm, I wonder if this would do it: https://www.highpointscientific.com/zwo-t2-to-125-filter-adapter-t2-125?utm_source=google&utm_medium=cse&utm_term=ZWO-T2-125&gclid=Cj0KCQiAmZDxBRDIARIsABnkbYR0c_5CLCpcnPlb7e92TKpV4zMbhwjM2sK_SHkqxYDeOHKQw0crjSwaAloTEALw_wcB If that will thread into a standard 2" th...

Thanks, I have the AOK Swiss adapters. So I could just slide it into the baffle. Good to know! That said, I may need to figure something else out. I extend my collimating lens forward with extensions, beyond the AOK Swiss adapter, so that I can insert deep into a scope's focuser to avoid needing to ...

Lovely, and really like the scale!

Very best,

I also thank you for your notes on data acquisition. It's so important so maybe that is a good next tutorial. :) That's the plan, I hope to do it soon, it will be acquisition and information from focus, exposure (no gamma), histogram, flat frame and recording the stream in FireCapture specifically ...

Hey all, I've seen this mentioned a lot, and saw one photo of it disassembled but no way to tell how it was assembled and mounted. I have the Baader 1.25x GPC to take F8 to F10 on scopes for PST mod use. However, how in the heck has anyone mounted this GPC securely in front of the front collimating ...

Bob Yoesle wrote: ↑

Fri Jan 17, 2020 2:12 pm

Wouldn't it be poetic justice if Lunt bought back their original patents and possibly production infrastructure for pennies on the dollar at auction?

It would!

But then less competition

Very best,

There's a bit more to the tuning, since it's not just an issue of being on-band, it's about the transmission profile. The same reason a 0.3A single etalon will not eliminate the photosphere leaking through showing the double limb. Mean while, two 1A filters can stack and shave off the skirt of the t...

Hey all, I made an acquisition and processing tutorial a while back (3 years ago? Yikes!) and it is fairly dated in terms of what I'm doing these days. I've been asked for a long time to make a new one showing what I'm doing these days. Specifically how I'm processing a single shot image for both th...