AR 15-4 in ha

[Ibbo!]

took this with the ZWO

managed to lose the newtons rings with the flat

it was a test to see if they are bad

I will not be using this cam on the sun again with the PST mod

click for larger image

[Montana]

A super shot :)

The level of detail seems to be crisper towards the edge, is that the camera or does it happen in processing?

Alexandra

[Psychobilly]

Any chance of seeing the Image "un-flattened" Steve...

Doesn't look to good for me seeing the sun today - clouds thickening again here and very few tiny breaks ...

Peter...

[Luke]

Nice shot, Steve, lovely colour scheme.

I'm seeing mixed reports on the ASI for solar, so not sure what to make of it now  Sarah and I will probably be in the hunt for a second solar camera, and the ASI price point seems nice... The Point Grey Chameleon looks a safe bet and not too bank-busting, though would not give us full disc at prime focus with our SolarMax 60 (edit: nor would the ASI as far as I know, but I like the price!!).

[Psychobilly]

I would like to move to 1/3 or 1/2" sensor  with more dynamic range but would still like to keep the frame rate up  so I know it's going to "cost"...

Peter...

[michael.h.f.wilkinson]

Nice result. I struggled with the ASI130MM for a while, and although I can do full disks with it, I found the combination of flats and darks needed to make the chip behave (it has both pattern noise in the dark current and flats, and Newton rings)  a pain. I gather the ASI120MM is better in terms of pattern noise, but I chose to steer clear. Ultimately, I find the puny chip of the DMK21 my best camera for H-alpha. I still record flats, but the Newton ring effect is much smaller. The ASI 130MM is great for lunar, however.

[Ibbo!]

will restack it this evening

i will also post a couple the flat did not work on

Steve

[Psychobilly]

The 618 on the LOHA is 1.03" per pixel and the 60fps and 1/2000s or faster exposure maybe my best bet for my boiling mid-afternoon captures...

I was hoping to try EQMosaic today but wall to wall cloud here

[CKemu]

I haven't had my ASI120mm long, noise is an issue, but I've not been shooting flats, I expect I can lift that issue reasonably easily.

Newton Rings I solved with a tilt adapter from Teleskop Service, it's pricey for what it is, but does the job perfectly. I've not been doing solar for long (had the scope a month, the ASI120mm for two weeks), so still learning, but the following shot was shot with a tilt adapter in the optical path and the ASI120mm, no flats, an no tweaking beyond colour, sharpness and levels.