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Posts for: CraigFair
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May 22, 2017 22:06:02   #
Europa wrote:
This is a stack of 60x200 second exposures, shot last night. Normal Equip and processing.

Beautiful job Brian.
May 22, 2017 22:02:43   #
Europa wrote:
I'm not familiar with the Nikon's, but try putting it on Manual mode.

Brian is right you have to put the camera setup in manual. You can adjust the focus, ISO and shutter speed. Use the Live Mode to focus with the + button magnifying your star.
May 22, 2017 21:55:51   #
JimH123 wrote:
Was out fooling around with my Sony A6300 and a Sony 18-200 lens using electronic shutter and was just experimenting to see if this lens was any good for astrophotography or not. Suddenly, this very, very bright meteor streaked across right to left. I captured the beginning and middle of the trail, but my 15 sec exposure ended before the grand finale at the end was reached. The meteor was slow moving and really lit up the sky.

And Comet Johnson would be in this view, but shooting at only 18mm FL, you are not going to see it.

I identified several stars to indicate where I was aimed and how long this trail segment was. And remember, it continued farther to the left, which the camera did not record.
Was out fooling around with my Sony A6300 and a So... (show quote)

Very cool capture Jim. I'm really glad you got the shot.
May 21, 2017 16:01:02   #
nikonshooter wrote:
At the beginning of the year I made a decision to spend what few nights I had shooting "up" using either my Atik 383L ccd or newly acquired ASI1600MM-C....and giving my Nikon cameras a rest. But try as I might, I cannot get images anywhere near the detail, color, and flat field with either of these two cameras. These two images were both shot with the ASI1600MM-C. M13 was LRGB and the IRIS nebula was L, Ha,OIII, and SII (Since there is a lot of nebulosity in this star field I was hoping....just hoping for a boost to my waning enthusiasm for these cameras. I have cropped out a lot of the pitiful donut, oblong, stars that are on the corners...but they are in abundance.

Besides the ASI camera, filter wheel, and filters, I used the Newt F/4 8 inch astrograph. I use a baader coma corrector but the field is far from flat.

Any ideas as to what could be causing the oblong stars in the corners (especially) with some of them looking like donuts (black holes in middle) and NO SONNY, I haven't discovered any black holes :)
At the beginning of the year I made a decision to ... (show quote)

I think the over all beauty of the shots far exceeds the little blips in the corners​.
Very well done Ed. Would shooting Flats help?
May 21, 2017 15:53:26   #
bwana wrote:
Sky condition were the pits last night but I just had to try my new observatory slideout... So shot the Sombrero galaxy and the Antennae galaxies through fairly heavy cloud to the extent I lost over half my Antennae subs and a third of my Sombrero subs. BUT the slideout work nicely!

The first time I've had the Infinity software give up on alignment; fortunately I also captured subs.

AT8RC, 0.6x reducer, Hutech HEIUB-II filter, Color ATIK Infinity on CGEM DX mount.

The truly ugly:
Sky condition were the pits last night but I just ... (show quote)

Very nicely done Brian. The antennas​ are so hard to get with our capabilities.
May 21, 2017 15:49:12   #
Marc G wrote:
Canon 450D (astromodded) Test 2
Cygnus Constellation
100 exp @ 90s ISO 800

Again I say beautiful too Marc.
May 19, 2017 18:16:38   #
Europa wrote:

How do you do an update. What hardware do I need? I don't see an update for CGEM mount in the Parent Directory.
May 19, 2017 14:35:57   #
SonnyE wrote:
Yep, things are looking Up.

I'm doing some research into last nights gatherings. I did a 25 image sequence, but between 19 and 20 there was a big jump, even double stars.
So I want to look at Stellarium and go back to see if a meridian flip occured, or a cable tangle, or what might have disturbed the mount. (Owl landed? Playfull raccoon? Death Star?)

Here's the 19 image gif:

Sorry about your Johnson wagging.
But great job Sonny.
May 18, 2017 18:04:05   #
SonnyE wrote:
I grabbed mine last night.

First, I doubt I would have had such luck without Brian W's tip about entering the RA and dec in the NexStar menu.
I used the site "The Sky Live" to get my coordinates, and to double check the nearby stars to the targeted spot (which happens to be invisible to Stellarium).
But the RA and DEC set me right where I thought I should be.

Then brought down some images to get my time right. And then started a sequence and called it a night.
I got 5 keepers out of 10 in the sequence. (fit files. )

So I have been playing with those today.
(And I expect I'll be playing with my Johnson more, weather permitting.)

And it should be a good object since it is coming closer into June.
I grabbed mine last night. br br First, I doubt I... (show quote)

That's a great job Sonny. Keep wagging your Johnson.
May 18, 2017 16:04:31   #
bwana wrote:
No Barlow used. In fact I used a 0.6x reducer on the AT8RC to get a 960mm focal length (and an acceptable f/4.8).


Yeah that's a push between power and f/stops. And your new stacks really clean up the shot.
May 18, 2017 14:28:14   #
bwana wrote:
Never happy with processing results so I redid these two galaxy images. Maybe better? Maybe not?

I think I'll throw M82 in the garbage and shoot new subs w/o cloud and moonlight!!


Very nice job Brian. I don't think I have seen a shot of M82 that close here before. Did you use a Barlow lens?
May 17, 2017 18:40:14   #
bwana wrote:
My wife and I probably harvest a hundred or so trees a year for firewood.


I can understand that Brian. After spending a winter in Regina Saskatchewan.
May 17, 2017 18:38:07   #
Albuqshutterbug wrote:
Thank you Craig.
I could have sworn I replied to this post but it ain't here so I apparently didn't hit send.
To make up for it, go to my Flickr page. I shot a bunch of shots at our zoo this morning with the new body and Tammy Ron 600.

Thanks Jim I'll go do that for sure once the grandkids leave.
May 17, 2017 18:34:53   #
Oknoder wrote:
Just a simple 50mm finder scope with a locking focus ring. I was using a SSAG camera, which is a waste of money in my opinion. Orion selling these cameras, that are nothing but a firmware hamstrung QHY5M for more than QHY sells the same camera, but with more features, turned me off from anything Orion ever again. When I bought it I had no idea what I needed though so, caveat emptor.

I think the reason I am able to get tight stars is more based on my location, than any equipment. I normally try getting SNR in the 2-4 range, since my seeing is usually pretty decent. I little to no light pollution, little to no wind impacts my setup. I can easily see the milky way with bare eyes on most nights.

Just a simple 50mm finder scope with a locking foc... (show quote)

I find my tracking numbers ​get better the further I get away from the Polaris Star.
May 17, 2017 18:29:47   #
bwana wrote:
Dark skies are a benefit for any relatively faint target. The only real light pollution I have is the Moon and Aurora Borealis (when active).

My largest source of light pollution is about 150km away...

An excellent article on processing for light pollution at:
This approach can be used from any target under light polluted skies.

Comet Johnson is fairly bright so I suspect a bit of light pollution wouldn't seriously impact imaging it...

Dark skies are a benefit for any relatively faint ... (show quote)

I view at a site 150 miles from LA and it is still a major source of light pollution. Haha.
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