Image of the day

Captured by
Douglas Rollain

M20 Trifid Nebula in LRGBHa

My Account

New to Astromart?

Register an account...

Need Help?

Posts Made By: Linton Rohr

May 23, 2010 08:11 PM Forum: Solar System Observing

Sunspots

Posted By Linton Rohr

Oh yeah. That's grown quite a bit since yesterday.
That's a wild looking line of filaments in the NW quadrant, near the big tall prominence!
Looks like someone skipped a stone across the solar surface. grin
Linton

May 27, 2010 05:35 PM Forum: Mounts

Telepod/Gibraltar Mount Quick Release

Posted By Linton Rohr

Pretty clever idea, Thomas.
I always get nervous when I'm balancing the scope with one hand
while trying to start the threads on the thumbscrew with the other.
Bad enough with the TV-85, but with the NP-127, I try to get a helper.
Murphy's Law is always in the back of my mind.
Or as we used to say at work... "What could possibly go wrong?" wink

Another good reason to do this:
I took the dovetail plate off my NP-127 once, to mount it on the Gibraltar.
A week later I loaded up the 127 and my GM-8 and headed up to the dark skies of southern Utah.
I set up the GM-8 one afternoon and waited until it was starting to get dark, before pulling out the scope.
Just as I was about to hoist it up on the mount, I noticed the dovetail plate was nowhere to be seen.
I knew exactly where it was though... about 640 miles away. Argh!

The only way I could see to improve your "prototype" would be if one of those ratchet type lever nuts would fit on there.
Otherwise, you did a pretty good job fashioning that sliding lever unit.
My only other thought was to make an extension for the original knurled knob,
but that would require drilling a sizeable hole through the side of the Gibralter cradle.
That would be best avoided.
I've already got a saddle clamp here. I'll start looking for another dovetail plate or two.
Thanks for sharing the idea.
Linton

June 1, 2010 09:13 PM Forum: Solar System Observing

Can anyone still see the Cassini Div?

Posted By Linton Rohr

I saw it on my last dark sky outing, May 15.
The seeing was very good, but I was still surprised.
Tried it again last night, but the seeing was poor.
I was using my 14.5" f/4.3 Starmaster both times.
Don't remember the power. Either 220x or 290x.
Those rings sure are flat!
Linton

June 4, 2010 05:14 AM Forum: Solar System Observing

Jupiter Struck Again?

Posted By Linton Rohr

Reports are that there may have been multiple impacts.
Looks like I'll be crawling out of bed in the wee hours.
Could be a nice black scar when it rotates back around. smile


"The discovery was later confirmed by another amateur astronomer in the Philippines."
That would be Christopher Go.
Here's his brief footage.

http://astro.christone.net/jupiter/jupiterimpact.wmv

Linton

June 17, 2010 02:46 AM Forum: Solar System Observing

Comet McNaught C/2009 K5

Posted By Linton Rohr

Nice sketch, Roland.
I finally got a look at the comet last Thursday, from the North Rim of the Canyon, at the GCSP.
Spotted it with 8x56 bino's and confirmed it in my TV Genesis, but clouds
moved over it before I could get the 14.5" Starmaster on it.
Got my first look at Jupiter for the year the same night.
Quite strange looking with only one EB. 8O
Linton

June 29, 2010 01:35 AM Forum: Solar System Observing

ISS solar transit?

Posted By Linton Rohr

Hmm. Apparently not.
The ISS is currently over the Cook Islands, per Heavens Above.
That should put it far below my horizon.
So, I wonder what that was...
I've seen jets before. It didn't look like that.
Any ideas?
Linton

July 7, 2010 10:03 PM Forum: AstroMart FAQ

how do I see posts older than 90 days?

Posted By Linton Rohr

advanced search
pick a forum
roll back the dates
enter * for subject
read to your hearts content smile

Linton

July 8, 2010 04:53 PM Forum: N.A.S.A.

NASA re-assigned

Posted By Linton Rohr

Sounds like satire from SNL or the Onion.
I'm afraid it's the sad truth, however.
Pathetic. What have we become?
Linton

July 11, 2010 08:54 AM Forum: Landscape Photography

Cloudscapes

Posted By Linton Rohr

Those are great, John.
Here's a recent panoramic compilation I shot at Bryce, to get the full length of this long cloud.
The color faded a bit on me while I ran back to the car to get my replacement battery. Argh!
Linton

July 11, 2010 09:12 AM Forum: Landscape Photography

Grand Canyon panorama

Posted By Linton Rohr

Not bad. But the better section of course, was looking out over the Canyon.
Ooh. Aah. grin
Linton