Dave Smith

Thank you. That is VERY interesting, and a lovely animation to go with it.

Dave

Brilliant. 

Dave

Very nice David. Things do seem to be hotting up.

Dave

Dave

48 minutes ago, Ags said:

I wonder about the science of this - why would these 2 nm be more contrasy than any other 2nm slice?

The G-band is in the blue part of the spectrum which has a shorter wavelength and hence greater resolution. The green filters are more suited for visual observation as that is in the middle of eye sensitivity..

Dave

14 minutes ago, LukeTheNuke said:

That's interesting that you use the 178 over the 174. Cracking solar images with a £300 camera? I take it you need a tilt adapter for the 178? What kind of FPS do you get at full resolution? (fast enough, it sounds like, if you are getting 2000 frames...)

Oh actually, doesn't Nigella use one as well? Hmmm.

I did get ~60 frames per sec but lately that has dropped to ~30 😔 . It was Nigella that inspired me to get both the 178 and more recently the G filter.

Dave

16 minutes ago, Ags said:

That filter looks very impressive, and I see at least some of your pictures are also taken with a 90 mm frac but are a real step up in resolution (I am sure your processing also has something to do with that). I'll add the filter to the todo list, but I am also thinking about upgrading the camera - I am using an ASI120MM and trying to claw back resolution with drizzles, so not ideal.

At the moment I am just using the green filter that came with the TS Herschel Wedge, which is supposed to be 'comparable' to the Baader Continuum.

All my white light pictures are with the 90mm frac (Megrez 90) The camera I use is the ZWO ASI 178MM which unfortunately doesn't quite cover the whole disc so have to take two and stitch them using Microsoft ICE (free).

I did use the 174 but very much lost out on resolution. I normally take 2000 frames with FireCapture and stack with AS!4. For the processing I mainly use Solar Toolbox in PixInsight.

Good luck.

Dave

If you enjoy white light imaging of the Sun can I recommend an Altair G-band filter. I have bought one recently and it really brings out the details.

To see the difference look at some of my recent images on astrobin. Last month images were with a continuum filter.

Dave

Wow. You were lucky. Super images.

Dave

Very nice. What scope were you using for the G band?

Dave

I wa out earlier but did not see that eruption. Well done.

Dave

Very nice.

Dave

Images and animations for other days can be seen on https://www.astrobin.com/users/dwgsmith/

Dave

I love that loop. Very detailed !

Dave

Dave

Excellent stuff. I originally didn't like inverted images but they are now my preference. More detail seems to show.

Dave

Had a good session this morning.

More images from this morning and earlier https://www.astrobin.com/users/dwgsmith/

Dave

7 minutes ago, sheffieldsunwatcher said:

Great photos; I'm envious, as clouds here have kept the sun hidden throughout most of the week

Thank you. That has mostly been the case here in Maldon but today it obliged.

Dave

Dave

Dave

Well done Nigella. A pity about the clouds.

Dave

Here it is from Helioviewer.org

Dave

I missed that as well. I was out at the beginning but had no idea that it was erupting.

Dave

2 minutes ago, Ibbo! said:

Good to know the sun is still there.

I was beginning to wonder 😄

Dave

Dave