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Author Topic: Caliraya's Dark Skies  (Read 5977 times)

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Offline sushi1128

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Caliraya's Dark Skies
« on: November 12, 2013, 08:59:57 PM »
Caliraya Nov 1&2, 2013


Camera: Nikon D7100

Image Size : 800 px


M42  The Orion and Running Man Nebula



M45 The Pleiades



The Horsehead and Flame Nebula
(The parallel lines are satellite trails)


Thanks for looking  :)
« Last Edit: November 12, 2013, 09:16:28 PM by sushi1128 »

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Caliraya's Dark Skies
« on: November 12, 2013, 08:59:57 PM »

Offline sushi1128

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Re: Caliraya's Dark Skies
« Reply #1 on: July 15, 2014, 08:05:47 AM »
More feeble attempts at AstroPhotography :)
Canon 350D + 400mm lens / or 500mm lens


Eta Carinae
Full resolution -  https://www.flickr.com/photos/26553014@N03/13754525595/sizes/o/


Lagoon and Trifid Nebulae
Full Resolution   -  https://www.flickr.com/photos/26553014@N03/13602121924/sizes/o/


Horsehead and Flame Nebulae


The Cygnus Wall (Atik 314l+)


M99 Galaxy  (Atik 314l+)


M3 Globular Cluster (Atik 314l+)
« Last Edit: July 15, 2014, 08:21:21 AM by sushi1128 »

Offline sushi1128

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Re: Caliraya's Dark Skies
« Reply #2 on: July 15, 2014, 10:23:38 AM »

The WitchHead Nebula in Eridanus (Nikon D7100)


The Swan Nebula (Atik 314L+ mono)

Offline dolina

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Re: Caliraya's Dark Skies
« Reply #3 on: July 15, 2014, 09:11:19 PM »
Envious sushi
Visit my Flickr, Facebook & 500px and see my photos.

Offline boyletsugas

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Re: Caliraya's Dark Skies
« Reply #4 on: July 16, 2014, 12:35:38 AM »
Astig!! More!

Offline sushi1128

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Re: Caliraya's Dark Skies
« Reply #5 on: July 16, 2014, 11:36:31 AM »
Thanks! Boyletsugas and Dolina(SD-6)

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Re: Caliraya's Dark Skies
« Reply #6 on: October 06, 2014, 07:56:05 PM »
Just adding more nature shots :)


Messier 35 (open cluster in Gemini) (NGC2158 is also pictured) Nikon D7100


Rosette Nebula - Nikon D7100


M45 Pleiades (reprocessed to reveal detail on dust lanes) Nikon D7100


M42 Orion Nebula (nikon D7100)


Offline sushi1128

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Re: Caliraya's Dark Skies
« Reply #7 on: October 06, 2014, 07:56:42 PM »

Moon -  Nikon D80


Moon - Nikon D7100


Nikon D80


Milky Way - Nikon D80


Offline sushi1128

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Re: Caliraya's Dark Skies
« Reply #8 on: October 06, 2014, 07:57:10 PM »

Winter Milky Way with Vixen Polarie(on tripod)


Cygnus Wall in Hydrogen Alpha


Me ! :D with my rig


rig : old nikon 300mm f4.5 AI (manual focus) lens and APO lens

Offline mcCoy!

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Re: Caliraya's Dark Skies
« Reply #9 on: October 07, 2014, 06:51:17 AM »
wow. nganga ako dito!

Offline retina

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Re: Caliraya's Dark Skies
« Reply #10 on: October 07, 2014, 07:02:24 AM »
Very nice astros....puyat talaga. BTW, would you care to share your setup? Thanks!!

Offline sushi1128

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Re: Caliraya's Dark Skies
« Reply #11 on: October 07, 2014, 01:12:06 PM »
Thank you ! McCoy and Retina :) and to those who "liked" :)

@rRetina ---> Re: Setup

For a ultra Portable Widefield setup, I use a Vixen Polarie (in addition to the usual Photo gear of camera/lens/tripod combo)
The Vixen polarie is designed for short focal lengths and lightweight loads (up to 3kgs). that limitation could prove disappointing if you intend to image nebulae and galaxies at longer focal lengths. But, it should prove sufficient for the Milky Way and some of the brighter DSOs. YMMV (i used this setup for the 2 MilkyWay shots above)
I sold my polarie last year to upgrade to a Vixen GPD2. I will detail this (more capable and rewarding) setup in my next post :)

to give you an idea how simple to use the polarie:  all you need to do is  point it north (it's equipped with a  compass) and tilt it to about 14.5 degrees using the built in inclinometer. point your camera (using your ballhead) to your target object....and start shooting !
or...you could just point it to the north star (using your smartphone to find it) and start shooting

My gear (giottos tripod / Nikon 17-35mm 2.8 / Nikon D80 and D7100 / phottix intervalometer /polarie )


take-out mode : i try to fit everything in this CDR-king case. tripod not included


To help you preview and locate your objects, try downloading Stellarium. It's Free ! You can input the specs of your camera gear and preview the scale of the objects vis-a-vis your gear. see below
Stellarium screen capture  of the Witchhead seemingly grinning at the supergiant star Rigel. Notice at the upper right hand corner, the gear previewed is for a Canon 350D and 200mm lens combo (my own shot above is too long (400mm) to capture this lovely pairing.
link to a actual image of the pairing (not mine)
http://www.astrocruise.com/milky_way/ic2118.jpg


 Youtube Demo video featuring Polarie's time lapse capability etc
2. Basic Set Up - Vixen Polarie Star Tracker Tutorial Video
« Last Edit: October 07, 2014, 01:31:48 PM by sushi1128 »

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Re: Caliraya's Dark Skies
« Reply #12 on: October 07, 2014, 02:39:01 PM »
Thank you very much. I really like your output. I have an idea now. I was longing to get the vixen polarie but I still can't find time to shoot. There are only few astrophotographers around here though.Most the threads are dead and not updated

Try to visit some existing thread:

http://www.pinoyphotography.org/forum/index.php?topic=93745.180

http://www.pinoyphotography.org/forum/index.php?topic=90530.msg1025708#msg1025708



Offline sushi1128

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Re: Caliraya's Dark Skies
« Reply #13 on: October 07, 2014, 06:43:43 PM »
Thank you! Retina :)

For my current and main setup:(actually, "only" :D)
I use a Vixen GPD2 equipped with Starbook-s (Vixen's GOTO computer controller)

details and specs here:
- Vixen GPD2 - http://www.optcorp.com/vixen-gpd2-equatorial-mount-w-tripod.html
- Starbook-s - http://www.optcorp.com/vx-2522-starbook-s-goto-upgrade-with-dual-axis-motors-for-great-polaris-mounts.html

  I like to mount camera/lenses shotgun so that i can collect more data (?efficiently ?). Clear and Dark skies are precious to me. As you already have pointed out, "it's hard to find the time..."
The lens, cameras, and attachments all add up to about 12kgs (just about the limit for this mount, but compare that to Polarie's poultry 2 or 3 Kgs hehe)
I use a car battery as a power source
-in about a month or two (after i image the Heart and Soul Nebula), I hope to upgrade this mount to one that can carry even heavier loads :D Dont be surprised if you find my AD in this site's Classifieds (Shameless plug :))

My main lens:
TMB92  (f5.5  500mm ) FPL-53 Triplet - a true Apochromatic Refractor
http://media.skyandtelescope.com/documents/TMB-92.pdf
This accepts all kinds of cameras (Nikon/Canon/ or a dedicated Astro CCD camera)
Imaging pinpoint bright objects against a dark background, like stars, lends itself to chromatic aberrations, like fringing. An APO lens eliminates this.

example of fringing from an Achromat. notice the blue halo around the stars
http://oi39.tinypic.com/2vl8a53.jpg  (not mine)

Cameras:

Canon 350D modified for astro by removing the IR filter. This, in effect, converts it into a full spectrum camera. The IR filter blocks most of the Hydrogen Alpha(Ha) wavelength (wavelength emitted by red colored nebulae, and a lot of them are in red :D)
Exposures using this camera are much faster compared to a unmodified version (probably by as much as 50% faster)

Nikon D80 and D7100 - these are stock but should be good for some objects that do not emit Ha i.e open(star) clusters, globular clusters, galaxies, moon, planets, and some nebulae (barring red)

Atik 314L+ mono - http://www.atik-cameras.com/products/info/atik-314-l-plus
this is a B&W camera but is designed to use take mono images using red, green, and blue filters. The three (RGB)frames can then be combined to produce an image in True Color.  And, it has a freezer built into it :) (The temperature can be controlled to about 25 degrees below ambient) older models do suffer from frost, but not this one, thank God! High temperature from extended exposures result to Amp noise and a lot of hot pixels.
Additionally, this camera is exponentially faster than DSLRs. An hours exposure in a DSLR would only require about 5 to 8mins from this camera (guess). Monochrome  are more sensitive than Colored cameras because 100% of the sensor is dedicated to each color channel (when imaging). Though you have to shoot the object through different filters to get the color(using a filter wheel). Colored sensors, such as DSLRs, have there chips divided by three (for RGB channels). So, when a DSLR acquires the blue channel, it has only 1/3 the sensitivity to blue (and so on). Hence, in AStrophotography, Monochrome is preferred, unless you like the convenience of one-shot-color :)    (One can mount this camera on a Nikon or Canon Lens (using an adapter))
To illustrate: I used this camera to image the Cygnus wall
I combined the three B&W images to get the color version (bottom)




I only hope i made sense :)




« Last Edit: October 07, 2014, 07:13:53 PM by sushi1128 »

Offline dolina

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Re: Caliraya's Dark Skies
« Reply #14 on: February 28, 2015, 12:08:11 AM »
Ganda ng kuha.
Visit my Flickr, Facebook & 500px and see my photos.

 

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