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Tonight, Tonight

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#1 hamdul

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Posted 02 August 2013 - 05:59 PM

It's 6:56 P.M., the sky is clear as a bell. I hope the weather Gods are in a happy mood and let it stay that way. :jump: :bow: :bow:

Fred

#2 ben2112

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Posted 02 August 2013 - 06:48 PM

May your skies stay clear all night long. :)

#3 hamdul

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Posted 02 August 2013 - 10:44 PM

Hope springs eternal and that's all I got tonight, "HOPE" and nothing else. :bawling: Correction, I also got clouds. They rolled in just as darkness was setting in. :(

Fred

#4 Peter9

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Posted 03 August 2013 - 03:59 AM

Sorry the weather Gods did not smile on you Fred. Hope you have better luck soon.

Regards. Peter.

#5 ben2112

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Posted 03 August 2013 - 04:37 AM

Sorry about the clouds. I am sick of clouds myself. You might have to do what I did. I keep an eye on the Weather Channel and see when the skies might be clear and set your alarm clock and do some early morning observing.

#6 hamdul

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Posted 03 August 2013 - 07:42 PM

:refractor:Another night is here. It's 8:35 P.M., the sky is clear so lets HOPE. :D

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#7 ben2112

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Posted 03 August 2013 - 07:45 PM

Well.. Don't be inside on the net, get that scope outside and cooling down. :jump:

#8 CelestronDaddy

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Posted 03 August 2013 - 08:31 PM

Hope it stays clear for you :grin: It about 8:30 CST and it is 97 deg outside and a few clouds. Doesn't look good for viewing but I'll wait a little longer. Hope you all get some good sky...

#9 AstroTatDad

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Posted 03 August 2013 - 09:02 PM

Hope it stays clear for you, our dark site trip got put off this evening because of clouds. But... here it is 7:00pm here and it's starting to clear. :) so hope to get sometime in here at home at least.

#10 CelestronDaddy

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Posted 03 August 2013 - 09:06 PM

Just went out and it will be a no go for me. Clouds have increased so moving my stuff back in off porch. Hope you guys fair better...

#11 hopskipson

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Posted 04 August 2013 - 05:08 PM

Sometimes you have to be patient, lucky or both. I went to my "dark" site a few weeks back. It started off clear and then the clouds started to roll in. It was after midnight and I was going to pack it in. I went inside and grabbed a cold one and just sat back for around 30 minutes and it cleared in different parts of the sky until it fully cleared around 1 a.m.

#12 CelestronDaddy

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Posted 04 August 2013 - 05:48 PM

James sounds like it cleared up for you! I did go back out with some binoculars (7X35 from the 60's) and caught a few nice views in Sagittarius and Scorpio. I went back inside after there were less frequent breaks in the clouds. I'm not sure what it will be tonight. I hadn't planned setting up since it's back to work in the morning. Maybe next weekend will be good and we also have the Perseids to consider!

#13 Greyhaven

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Posted 04 August 2013 - 07:38 PM

Should be good tonight. Just had some serious thunder showers pass about 2hrs. ago skies are now full of cool dry Canadian air temps 75f RH 44% and dew point 57.5f. I can hardly wait to see what will go wrong. Hope you have a good evening. Time to roll the roof back dim the lights and wait.
Be Well
Grey

#14 CelestronDaddy

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Posted 04 August 2013 - 08:28 PM

Good luck Grey...

#15 Greyhaven

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Posted 05 August 2013 - 01:39 PM

Yes,things went well. I managed a half dozen image sets. Even managed a couple of new galaxy images although their quality was far from ready for public consumption they were captured,( M 051 and M101) Plus M057,Albireo,and M031 were as good as the 5i can do . Temps dropped to mid 60's and humidity stayed reasonably low. I woke the old 5i up from a 3 day hibernation and alignment was spot on. I hope others had fun last night also.
Be Well
Grey

#16 nodalpoint

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Posted 05 August 2013 - 01:43 PM

Great skies last night with a bright Milky Way! That lasted until about 11:30 when clouds rolled in, so maybe an hour or so of decent dark sky... :( Spent most of that time on Saturn while I have the chance.

#17 CelestronDaddy

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Posted 05 August 2013 - 03:26 PM

Glad you all got scope and imaging time!

#18 Greyhaven

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Posted 05 August 2013 - 07:23 PM

Once more into the breach go the photon hunters.
Clear skies 72f 39% RH dew point 39f
I'm trying for m101 and M051 again tonight. Just want to see if my 5i can do it. Still 45 minutes or so until dark enough to check out alignment ect.
Be Well
Grey

#19 Greyhaven

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Posted 06 August 2013 - 03:04 PM

Well I pushed my little Nexstar 5i pretty far last night.
I got M051, M101,M031 and M39 a small cluster in Cygnus. M039 is a single 15 sec@ISO1600.
I know my processing needs a lot of work but I am pleased.
Be Well
Grey
M051

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#20 Greyhaven

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Posted 06 August 2013 - 03:06 PM

M101

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#21 Greyhaven

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Posted 06 August 2013 - 03:06 PM

M031

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#22 Greyhaven

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Posted 06 August 2013 - 03:08 PM

M039

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#23 ben2112

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Posted 06 August 2013 - 04:31 PM

Cool!! :)

#24 Tel

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Posted 07 August 2013 - 06:33 AM

Once more into the breach go the photon hunters.
Clear skies 72f 39% RH dew point 39f
I'm trying for m101 and M051 again tonight. Just want to see if my 5i can do it. Still 45 minutes or so until dark enough to check out alignment ect.
Be Well
Grey


Hi Grey,

Your Nexstar 5i can certainly "do it" as you have subsequently proved ! Congratulations on the obtained images. :bow::bow:

Typical use of a DSLR for this purpose, can of course produce an appreciable amount of electronic "noise", so it might perhaps be better to reduce the ISO number. Alternatively, a greater number of stacked subs plus the taking and subtraction of a few dark frames will also reduce this obtrusive noise significantly, but, if time is at a premium, then perhaps just try reducing the ISO number alone. Much of any then residual "noise" can be eliminated during processing.

Vignetting, (as is evident by the central lighter area in the images compared to their outer edges), is also a problem I find I too incur when using a DSLR and, although this too can be "processed out". Taking a few flat frames will generally remove this problem so long as the software is available, (as with taking "darks") to subtract them, (or is it add them, I can never remember which)?

I took the liberty of processing your image of M51 in Photoshop CS2, to illustrate the effect of ridding it, particularly of its vignetting since the "noise factor" was not severe in this instance and the image itself, a little underexposed; as it should be. I have attached the result of what pure messing with processing can do. I apologise profusely if its not to your taste, I merely dared to use it to emphasise how powerful processing can be.

Best regards,
Tel

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#25 Greyhaven

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Posted 07 August 2013 - 08:41 AM

Tel
Thanks for reworking that image( kind of was hoping you would see it and point me in the right direction) I think today I will play with the images I've grabbed in the last few days and do some work in CS2. I knew I had the data to get a better result on M052 but was a bit rushed and spoiled the processing job. I guess the skies are going to be bad clouds and rain tonight through Friday so, now that you were kind enough to show me the data was there, I have a chance to see if I can move it in the right direction. Thanks for keeping me on track.
The 5I on a tripod and Canon 1100D plus BYEOS work well for me in my little observatory but I'll just have to learn to set the delay for 5 seconds and step out on the deck and used the 300mm dob and allow for more images and follow the Master's directions :bow: :bow: :bow: :bow:
Be Well
Grey






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