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#3051 Dom543

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Posted 21 August 2015 - 09:33 PM

North America and Pelican Nebulas with SX-825 mono and LodestarLive

 

Attached File  North.America.Pelican_2015.8.17_22.46.47_75%.jpg   387.72KB   44 downloads

This image file is 50% reduced in size and resolution. Please see the full-size, full resolution capture here http://stargazerslou...3893_501942.jpg.

 

1x60sec red H-alpha + 1x60sec all-spectrum luminance frames live mean stacked in LodestarLive.
Creating color images with mono cameras is a new capability of the test build of LodestarLive beta-tested here.
For more info please see LodestarLive's creator's post here http://stargazerslou...ectrum-preview/

 

Samyang 135mm f2.0 ED lens with 7nm Baader H-alpha filter. Captured from Umtanum Ridge (Eastern Cascade Mountains).

 

For comments or questions regarding this image, please use the discussion thread http://www.cloudynig...le-and-working/ to keep this gallery thread mostly for images.

 

Clear Skies!

--Dom


Edited by Dom543, 21 August 2015 - 10:07 PM.

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#3052 Dom543

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Posted 21 August 2015 - 10:05 PM

Rose of the North with Elephant's Trunk (IC1396) using SX-825 mono and LodestarLive

 

Attached File  Rose.of.the.North.with.Elephant.s.Trunk_2015.8.18_20.49.19_75%.jpg   434.62KB   27 downloads

This image file is 50% reduced in size and resolution. Please see the full-size, full resolution capture here http://stargazerslou...3893_199536.jpg.

 

1x90sec red H-alpha + 1x90sec all-spectrum luminance frames live mean stacked together in LodestarLive.

Samyang 135mm FL f2.0 lens with 7nm Baader H-alpha filter. Captured from Umtanum Ridge, WA.

The bright star on the upper right is Barnard's Garnet Star.

 

Apart from its higher, almost HD resolution, one of the main benefits of the SX-825/Ultrastar cameras is their anti-blooming feature.

This makes it possible to keep stars as tight pinpoint dots that are not overshadowing the subtle nebulas.

A touch of the natural pinkish color of the H-alpha radiation helps to separate the nebula from the star layer.

 

Very pale color saturation was chosen as this seems to show the most fine detail and matches the fluffy cloud like nature of the nebula.

About two weeks ago I posted a black and white image of the Elephant's Trunk just by itself, taken by the same camera but with a 300mm FL lens.

For comparison, it can be seen here in full resolution http://stargazerslou...9_3893_6263.jpg.

 

For comments or questions regarding this image, please use the discussion thread http://www.cloudynig...le-and-working/ to keep this gallery thread mostly a gallery.

 

Clear Skies!

--Dom


Edited by Dom543, 22 August 2015 - 12:24 PM.

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#3053 Dom543

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Posted 21 August 2015 - 10:37 PM

Sagittarius Star Cloud with SX-825m camera and LodestarLive

 

Attached File  Sagittarius.Star.Cloud.M24_2015.8.17_23.21.08_75%.jpg   470.42KB   27 downloads

The image file is 50% reduced in size and resolution. please see the full-size, full resolution capture here http://stargazerslou...3893_569868.jpg.

 

To me personally, the tight pinpoint stars made possible by the anti-blooming circuitry built in to this camera are probably a more important feature, than its larger field or higher resolution (than those of the ICX829 based cameras). This brings entirely new classes of objects into the reach of real-time EAA. Earlier I have seen star fields captured only with DSLR's or dedicated astrophotography cameras.

 

The above image is a stack of two 30 sec frames stacked together in LodestarLive. One taken with a H-alpha filter and the other a simple luminance. H-alpha filter is not normally needed or used for star fields. But I also wanted the faint nebulas, that happened to be included in the wide field, to show.

The main objects on this image are the following. 

Emission nebula IC4701 on top,

Small Sagittarius Star Cloud M24 taking of most of the field,
Bok modules Barnard 92 & 93 imbedded in star cloud,
Emission nebula IC1283-84 (Sh2-37) the round object on lower left.

 

I would also like to point out that taking this image was also an extreme stress test of the stacking algorithm Paul Shears has built into LodestarLive and progressively refined. It is extremely difficult to stack the tiny stars with the accuracy required, when even a single pixel shift between the frames would show up. Fuzzy nebulae and larger blob stars are much more forgiving. Not mentioning that there are thousands of stars on the images that all need to be placed accurately on top of their earlier copies. All-in-all, the stacking algorithm passed the test with flying colors. We are grateful to Paul for all his efforts that he put into it to reach this degree of sophistication and accuracy.

 

Clear Skies!

--Dom

 

For comments or questions regarding this image, please use the discussion thread http://www.cloudynig...le-and-working/ to keep this gallery thread mostly for images.


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#3054 Dom543

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Posted 24 August 2015 - 11:59 AM

Color with Mono Cameras and LodestarLive

 

I have had the pleasure to beta test the new multi-spectral feature that Paul Shears is building into LodestarLive.

Here is the preview thread by Paul  http://stargazerslou...ectrum-preview/.

 

Here are two images made with monochrome cameras and the current test build of LL.

First is the Dumbbell Nebula M27 from yesterday night taken with a Lodestar x2 monochrome camera.

Attached File  Dumbbell.M27_LS.Ha+Oiii_2015.8.23_22.48.01.jpg   145.34KB   29 downloads

 

The second one was taken a couple of nights ago with the SX-825 mono. This is a 75% crop of the original capture.

Attached File  Dumbbell.M27_Ha+Oiii_2015.8.20_00.01.32_crop75%.jpg   228.85KB   15 downloads

 

Both images are 5x30sec mean stacks.

The first three frames were captured with an O-III filter and assigned to the green and blue channels. Then two more H-alpha frames added to the stack assigned to the red channel. The minimum would be two frames stacked, one O-III and one H-alpha. I stack more because I like the resulting nice smooth texture. Exposure times are the same as would be with the same filters without the multispectral feature.

 

Please note that since we are using monochrome cameras, exposure times are shorter than would be with color cameras for two reasons. First, we don't lose light in the micro-filters on the pixels of the color sensor. Second because all pixels of the mono sensor are detecting the light equally. In case of a mono sensor only the yellow and magenta pixels are sensitive to H-alpha light and only the cyan and green pixels to O-III. (Right now Seattle is engulfed in the smoke of the massive forest fires further East. At the time the image was taken yesterday nigh, only the three main stars of the Summer triangle were visible with bare eyes on the entire sky. At 11:15pm even those were gone and I had to call off astronomy for the night. Moisture condenses on the smoke particles as seeds and the whole sky becomes uniform opaque white illuminated by the moon. Due to the smoke, exposure times were probably the double of what they would be under normal conditions.)

 

An added benefit is that narrowband imaging is not affected by light pollution or moon glare. The moon was up and past first quarter yesterday night. This new feature of LodestarLive makes it possible to produce genuine multi-color images with NB filters.

 

As far as I know, this multi-spectral, multi-color capability is an absolute first ever in real-live camera assisted amateur astronomy. We are grateful to Paul Shears for his continued efforts to lead the way and make this and other new capabilities available for the entire EAA community.

 

Please use this discussion thread http://www.cloudynig...d-lodestarlive/ for comments and questions to keep the gallery thread mostly as a gallery of images.

 

Clear Skies!

--Dom


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#3055 Dom543

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Posted 24 August 2015 - 12:38 PM

Western Veil with SX-825 mono and LodestarLive Multispectral

 

Attached File  W.Veil_Ha+Oiii_2015.8.22_00.24.09_95%.jpg   430.26KB   12 downloads

Please click on the image to see it in full resolution. It makes a real difference in the detail visible.

 

3x60sec H-alpha + 3x60sec O-III frames live mean stacked using LodestarLive's multispectral capability.

Meade 10" f6.3 SCT used with 3.3 focal reducer.

This image is dim due to the forest fire smoke through which it was taken.

 

For comments and questions please use this discussion thread http://www.cloudynig...d-lodestarlive/.

 

Clear Skies!  

--Dom


Edited by Dom543, 24 August 2015 - 12:39 PM.

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#3056 Dom543

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Posted 24 August 2015 - 12:59 PM

Western Veil in "Swedish" Palette with SX-825 mono and LodestarLive

 

Attached File  W.Veil_Ha+Oiii_2015.8.22_00.32.55_95%.jpg   398.27KB   12 downloads

Please click on the image to see it in full resolution. It makes a difference in the detail visible.

 

H-alpha is yellow and O-III is blue in the "Swedish" false color palette.

Use of false colors is common in narrowband imaging. The best known is the Hubble palette but I prefer the Swedish for Ha+O-III.

 

For comments and questions please use this discussion thread http://www.cloudynig...d-lodestarlive/.

 

Clear Skies! 

--Dom


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#3057 Dom543

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Posted 24 August 2015 - 01:11 PM

Veil Close-up with SX-825 and LodestarLive Multispectral

 

Attached File  Veil_Ha+Oiii_2015.8.22_12.54.40_75%.jpg   452.07KB   9 downloads

Thii image file has been reduced to 50%. Please see it here in full size and full resolution http://stargazerslou...3893_663204.jpg

 

3x120sec H-alpha + 3x120sec O-III frames live mean stacked using LodestarLive's multispectral capability.

Meade 10" SCT at f4.0 and Baader 7nm and 8.5nm H-alpha and O-III filters and in "Swedish" palette colors.

The exposure times needed were excessive due to the thickening forest fire smoke through which it was taken.

Normally I would use 60sec exposures for this object at f4.

 

For comments and questions please use this discussion thread http://www.cloudynig...d-lodestarlive/.

 

Clear Skies! 

--Dom


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#3058 A. Viegas

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Posted 24 August 2015 - 04:13 PM

Wow. Those are very nice!! Thanks Dom. You are very dedicated. Thanks ! One of these days you should consider broadcasting on NSN to showcase this stuff in real time !!

#3059 CHRIS_DJ

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Posted 25 August 2015 - 01:15 AM

Moon images captured with SC2000 DIY board camera with Orion 6 inch F5 reflector.

1/500 second exposure, Brightness - 100, AGC off, 3D NR off.

No processing, just single capture images from Sharpcap.

 

 

Attached Files


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#3060 Astrojedi

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Posted 25 August 2015 - 12:54 PM

A couple of globs (M28 & M15) using ASI224 and Nexstar 8SE at f3.7 (live stack using AstroToaster)

 

M15: 50x1sec

M28: 22x3sec

Attached Files


Edited by Astrojedi, 25 August 2015 - 03:34 PM.

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#3061 Don Rudny

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Posted 26 August 2015 - 01:26 PM

Had some fun viewing last night even with moisture ladened skies and a high bright moon.  Used my 7nm NB Ha filter with the color Lodestar X2c and Lodestar Live software.  Here are some captures I'd like to share.

 

Attached File  image.jpg   159.9KB   6 downloads

Attached File  image.jpg   203.26KB   1 downloads

Attached File  image.jpg   100.34KB   2 downloads


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#3062 Don Rudny

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Posted 26 August 2015 - 01:28 PM

Attached File  image.jpg   133.45KB   2 downloads

Attached File  image.jpg   146.04KB   1 downloads

Attached File  image.jpg   150.57KB   1 downloads


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#3063 DonBoy

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Posted 27 August 2015 - 04:02 PM

Her are some captures off my live broadcast with no post processing.  Equipment was C8@f3, ASI224, Idas LPS and all 15sec subs with various stacks which you can find info in the high resolution link starting with M13 and moving to the right. 

 

https://www.flickr.c...57656927157919/

 

Here is further discussion pertaining to the night of acquisition:

 

http://www.cloudynig...4/#entry6754183

 

Could have used better color balance for M13

 

Attached File  M13-15SG250G50-082515.jpg   107.24KB   7 downloads

 

Attached File  M57-15SG250G50-082515.jpg   88.2KB   3 downloads

 

Attached File  M52-15SG250G50-082615.jpg   199.04KB   5 downloads


Edited by DonBoy, 27 August 2015 - 04:12 PM.

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#3064 DonBoy

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Posted 27 August 2015 - 04:05 PM

Attached File  NGC7789-15SG250G50-082615.jpg   190.76KB   5 downloads

 

15secx10 M103

Attached File  M103-15SG250G50-082615.jpg   199.83KB   5 downloads

 

 

 

 

 



#3065 DonBoy

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Posted 27 August 2015 - 04:05 PM

15secx20 M103

Attached File  M103-20STK-15SG250G50-082615.jpg   110.19KB   6 downloads

 

Attached File  NGC663-15SG250G50-082615.jpg   144.15KB   2 downloads

 

Attached File  M27b-15SG250G50-082515.jpg   175.86KB   2 downloads

 

full resolution link starting with M13 and moving to the right:

 

https://www.flickr.c...57656927157919/

 

 

 

 

 


Edited by DonBoy, 27 August 2015 - 04:07 PM.

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