Heya, Woke up to some very good seeing conditions, didn't spend a lot of time, took two videos of the prominence and AR and that's it. A rapid session. Seeing was sub-arc-second. SSM data was wonderful to see. The view on screen was really steady and wonderful, too bad there wasn't more on the surfa...

Starry Jack wrote: ↑

Thu Mar 19, 2020 1:04 pm

Marty,
Where is your Baader Red CCD-IR Block placed and what size is it?

Jack

Hi Jack,

It's on the nose of my PST module, extended forward with a 2" barrel extension. It's 48mm (2").

viewtopic.php?f=9&t=26560&start=25#p239784

Very best,

Heya, Woke up really late today, was cloudy, but managed to go outside very late afternoon when my seeing is the poorest. I managed to work through some 2~3 arc-second seeing as there were tiny moments of 1.2~1.5 arc-second seeing here and there, so I stayed in that range to try and get data at cour...

See, I didn't understand how photosphere got through, now I think I get it: it's just so bright that even at 0.1% pass through in the 500nm range it floods the image. I get double stack, why not double blocking filter instead? they're cheaper. We are all waiting on the 1A blocking filter. :) Once i...

Great captures Phil, great seeing lately!

Very best,

Marty, That is how I usually see them in my Orion 70. As a grainy texture. But your outstanding photos reveal them as what they really are. Convection cells. What is the make of the larger refractor in your photo? It resembles an older Celestron C102 I have. James Hi James, Its an old Celestron CR1...

Marty, I have been able to get the spicules occasionally in my SM II 60 but it's fairly rare. Visually it seems the Coronado doesn't do the best at the high magnifications required to see them plus seeing has to be good as well. The SM II 60 does better visually with lower power whole disk viewing ...

See, I didn't understand how photosphere got through, now I think I get it: it's just so bright that even at 0.1% pass through in the 500nm range it floods the image. I get double stack, why not double blocking filter instead? they're cheaper. We are all waiting on the 1A blocking filter. :) Once i...

Thanks all, :bow i love your wide field prominence images, are you using a focal reducer at all for these; a drift method for capture or is this just the native prime of your 120mm with the 290 camera? No focal reducer. It's a 120mm F10 frac and the ASI290MM with it's 2.9um pixels; 656nm on 2.9um pi...

Thanks all, Marty, I can understand that. Solar observing has it's risks. I just wonder how the Baader solar film used for visual work would do on your Newt? I just wonder how well those convection cells could be seen. Your photos of them are truly outstanding. Only in professional photos with much ...

Heya, Despite AR2758 still hanging around, there was virtually nothing else but a wee filament here and there and hardly any prominences to really look at, other than one little one that is significant enough to see from the eyepiece. I wanted to capture small things today to exhibit the solar minim...

Nice session Brian, good limbs!

Very best,

Heya, I have not; because if there's two major lines coming through, the one with more transmission will swamp the other and you'll see basically one. This is why even with a single blocking filter in HA, you still can see the parasitic continuum leaking through and you can still see the brighter ph...

DeepSolar64 wrote: ↑

Fri Mar 13, 2020 6:12 pm

Did you try it with an eyepiece to see how well they could be seen visually?

Hi James, no sir, ND3.8 film is not visually safe. I generally do not look into big aperture scopes visually as I primarily image. For visual I tend to use my smaller scopes, safer, less energy.

Very best,

Lovely captures Salvo, and that animation is cool!

And there's plenty to see in white light with enough resolution!

Very best,

Great captures Robert!

Very best,

Great captures Robert!

Very best,

Lovely capture Pedro!

Very best,

Excellent series Stu! Love those spicules on the limb shot and Cak!

Very best,

Heya, Lucky Friday the 13th perhaps? Woke up to a clear sky and excellent seeing conditions which allowed me to get some data in high res, and some lower image scale data to get some different compositions. AR2758 is winding down and approaching the limb to leave our sight, but it lasted quite a whi...

Heya, I too went through reading the one or two (as that's it) sources about grid pattern on the IMX183. But that's the thing, there's only literally one or two documented sources and there was no data surrounding it. The same happened with the IMX178 sensor, many get grid patterns with it, it's muc...

Heya,

Interesting build; any examples of its output? Transmission? Double-limb suppression?

Very best,

In front of any scope... with a blocking filter in the diagonal? Heya, With an appropriate holder/adapter/mount you can thread it in front of virtually any scope, as long as the focal length is around 1m or less likely (you'd have to look that up). For visual safety you need an ITF & blocking filte...

Heya, I had decent seeing this morning, around 1.2~1.4", so was able to capture some interesting bits in AR2758 in HA & CaK. Seeing dropped rapidly after that, just after 11am Eastern Time as my mid-day seeing started to become apparent. The sunspot is gone, AR2758 no longer has a visible umbra real...

Heya, I had decent seeing this morning, around 1.2~1.4", so was able to capture some interesting bits in AR2758 in HA & CaK. Seeing dropped rapidly after that, just after 11am Eastern Time as my mid-day seeing started to become apparent. The sunspot is gone, AR2758 no longer has a visible umbra real...