Help needed for Solar Observation this Sat 8am to 4pm

rlow · Post by **rlow** » Mon Jul 04, 2005 6:14 pm

Thanks to Wee Kiong, Mooey and I had our first look at the sun thru H-alpha filter and the image was fabulous. With the PST and Pentax ep at 8mm (50x, 60 deg apparent field), the image was almost to the edge of field, and various solar features on the chronosphere, eg, prominences, filaments, granulations, active regions around sunspots etc, can be seen. And the image is dynamic, with movement in real time!

I wonder if anyone had tried imaging all that?

Post by **Lee** » Mon Jul 04, 2005 7:12 pm

This is the first image taken and posted under Astrophotography sometime back.

PST with William Optics 25mm Digital Adapter via Nikon 885

Jin Peng · Post by **Jin Peng** » Mon Jul 04, 2005 8:17 pm

cool, mooey, so good thingy never pull me along go see see, cool stuff leh

ALPiNe · Post by **ALPiNe** » Wed Jul 06, 2005 1:51 am

rlow wrote:Thanks to Wee Kiong, Mooey and I had our first look at the sun thru H-alpha filter and the image was fabulous. With the PST and Pentax ep at 8mm (50x, 60 deg apparent field), the image was almost to the edge of field, and various solar features on the chronosphere, eg, prominences, filaments, granulations, active regions around sunspots etc, can be seen. And the image is dynamic, with movement in real time!

I wonder if anyone had tried imaging all that?

Just curious, but exactly how is this H-alpha filter different from the ordinary solar filters? Is it possible to see those solar features (e.g prominences) that you have mentioned when using ordinary solar filters alone whilst using high-powered EPs like the Pentax 8mm? I hope you can enlighten me on this. Thanks!

Cheers,
:cheers:
-ALPiNe

Tachyon · Post by **Tachyon** » Wed Jul 06, 2005 9:06 am

Chekc out the links in this post: http://www.cloudynights.com/ubbthreads/ ... ll/fpart/1

Cheers!

chrisyeo · Post by **chrisyeo** » Wed Jul 06, 2005 9:57 am

Hi Alpine,

For the benefit of the forum readers, could you post your question as a different thread next time? Thanks.

Anyway, to answer your question quickly, Halpha is a much more narrow bandwidth than ordinary solar filters and thus prominences are not visible in ordinary ones no matter what ep you use.

If you want to know more, just follow Tachyon's helpful links.

Clear skies!
Chris

ALPiNe · Post by **ALPiNe** » Wed Jul 06, 2005 6:15 pm

Thanks alot guys for the spot-on cognizance! Really appreciate it!

Cheers,
:cheers:

- ALPiNe

MooEy · Post by **MooEy** » Thu Jul 07, 2005 9:27 pm

nice link, chris maybe u can move part of this thread to generalforum.

~MooEy~