Carlos Grillo Ramos

Photographer :Carlos Grillo Ramos
Title :Great Orion nebula
Camera :Astro 50d
Location :Ager, Spain
Date :

Carlos Grillo Ramos

Photographer :Carlos Grillo Ramos
Title :Crescent nebula and around
Camera :Astro 50d
Location :Torroja del Priorat, Spain
Date :

Carlos Grillo Ramos

Photographer :Carlos Grillo Ramos
Title :IC443 and Sh2-249
Camera :Astro 50d
Location :Ager, Spain
Date :

A nice post

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compare

[socialcompare width=”50%” height=”300″]http://www.centralds.net/cam/?p=1945#nofull;noflags[/socialcompare]
[sc]http://www.centralds.net/cam/?p=1952#noedit[/sc]

DarkFrame comparison :1100D,600D,60D,50D,40D

The images were taken at indoor dark room (Temperature : 20C~22C) and the exposure time was 450sec ( 7.5 minutes).We croped 224×224 pixels in center area of original images and not resized.

In order to distinguish the deferance of each shots more easily we stretched the tone levels in Photoshop program. The default value of highlight Levels is 255 and we stretched this to  30Levels. Read more

JoungChoul Ahn

–  June 5 th, 2011
–  Antares region
–  Inje, Gangwondo, Korea
–  Takahashi em200 temma2
–  FS60c + Reducer*0.72
–  Longperng62, PHD,DSI,gp-usb
–  Astro40d
–  ISO1600  300 seconds   4 frames mosaic
–  Image Plus3.0, photoshop CS3

CDS-1100D, CDS-600D TEC Cooling Modules TEST (2012. 4. 25)

We tested 8set of camera cooling modules to get the temperature curves/ time.

Below chart is the output.

In the period of 0~3minutes the drop down curves are almost similar to straight line and reached to about 70% of maximum cooling temperature. Read more

350D, 400D questions

1. Is it possible to send you a Canon 350 or 400 to make the modification to an cooles DSLR?

Cooled 350D(=Astro350D) and Cooled 400D ( Astro400D) are discontinued and now we can’t modify 350D, 400D to cooled DSLRs.
Currently 60D,600D, 5D Mark II, 5D Mark III, 6D,  Sony A7s are the cameras we can mod.

CDS-600D questions.

1. I noticed that all of the internal filters and glass are removed from the front of the sensor and you use a Hoya Clear glass to seal the unit. Are you able to use a (Baader or another brand) UV/IR glass to seal the unit instead of the Hoya clear glass if we do not have a need for full spectrum? This will also minimize the amount of glass that can diminish light transmission and possibly cause internal reflections from bright stars.

Yes, you can choose Baader UV/IR blocking filter option instead Hoya clear filter : +USD 136.00

2. Have you tested the CDS-600D on a very bright star to check for reflections when a 2″ filter is used?

We have the shots of CDS-1100D with VIXEN VISAC tube on arcturus and  you can see the images. The sky condition was pretty fogy and iso400, 180sec exposure.  Read more