Image of the day

Captured by
Lawrence Parchman

Sculptor Galaxy (NGC 253)

My Account

New to Astromart?

Register an account...

Need Help?

Large Spot NOAA 0904

Started by Kevin, 08/17/2006 03:09AM
Posted 08/17/2006 03:09AM Opening Post
Not the greatest seeeing but better than what I usually get. Naked eye to me with baader filter in front of my face. Huge sunspot group!

This was single shot today from my D70 at prime focus of my 5" f8. Haven't a clue how to tease detail out of these things. Just auto color adjusted which seemed to take away the blue cast, and contrast stretched.

Clear skies,
Kevin
http://astronomy.darkhorizons.org

Attached Image:

Kevin's attachment for post 32982
Posted 08/17/2006 11:28AM #1
Kevin

Very nice shot!

Thanks
Bill
Posted 08/18/2006 04:22AM #2
Here's a shot I took last Friday with my ToUcam and a 127 mm Orion Mak. The seeing wasn't great but I got some pretty decent detail with the sunspot group near the sun's limb

Attached Image:

steve thornton's attachment for post 106373
Posted 08/20/2006 02:00PM #3
Hi everyone,
Sunspot 904, with just one large spot remaining, is rotating out of view now close to the limb. Now is a good time to catch good detail in white light if you can. I tried different powers until settling on my 20mm Erfle with the 2.5x Powermate for 100x. This power hit the spot (pun intended) showing me the best balance of umbra, penumbra, faculae, and grain. One large area of facula surrounds the penumbra, with fractured faculae trailing behind. There is one, maybe two, very tiny sunspots in the fractured section. The air was too unsteady to verify the second spot. Backing the power down below 50x shows enhanced faculae detail around the spot.

David E