Sun H-Alpha 20th March at 16:00

[Macavity]

New (Old Style?) Cam arrived at this afternoon, so
dashed out to catch the surprising gap in clouds!

Herewith Lunt50 plus Imaging Source 41AU02.AS

And <drum roll> NO Newton's Rings! (Phew!)

No "Recliner Chair" for my old age, I guess, but...

 

[xtreemchaos]

great disc Chris, it cleared too late here for me to catch it, hoping for a chance in the morning, hoping for spots too. thanks,  charl.

 

[Davey-T]

Nice sharp evenly illuminated disc Chris, did you do flats in the end ?

Dave

[Pete Presland]

Good looking disc, with some nice proms visible.

[Macavity]

Thanks Folks!

No Flats needed after all, Dave. The Cam screwed on directly
to the diagonal and, as luck would have it (for a change!), the
"sweet spot" was already fairly central and focus easily found!

Dosh aside, I certainly feel that this camera is more suited to
the *specific* purpose than the ZWO120MM, so I'm happy!
No NRs. I lose some resolution, but get a bigger chip for WL
with my Altair Astro 66mm f/400 - Without the 2x1 mosaic!!!

May indeed have another go tomorrow... Is the *latter* true
in reality?!? Can I somehow fit a Barlow in THIS small space? 
This amount of good fortune cannot last... lol! 

[Merlin66]

The DMK 41/ 51 is pretty good for Ha solar, never experienced Newton Rings with either - the new ASI 174MM is the one giving me some headaches...just waiting on the ZWO tilter to arrive.

 

[Tony G]

Looks like a perfect combo. I'm kind of wishing so had bought a 50 with a dmk41. With the lunt 60 cams seem limited. Then there seems to be more sweet spot issues too with the 60 vs the 50. Judging from full disk images I've seen. I could be wrong. I'm looking into the 174 but would rather have the dmk51 I think. I don't know. You guys keep those awesome images coming help me make up my mind!

[Merlin66]

Problem with the DMK series is that they are becoming dated.....

The frames rates are limited and low compared with the current offerings.

(On the DMK 51 running on a new "hot" computer with USB3 ports - the frame rate is reduced by 50% - you're lucky to get a steady 10 fps. I can get >100 fps with the ASI 174!!!!)

 

[Tony G]

Another issue I wasn't aware of! Thanks! I'm so close to getting one. Now may be difficult as they are on sale! Oh nooooo..