How to replace IR-block filter on *ist D

[Steveo T]

I wish I had the courage to try something like that. Your entire setup is quite impressive. It comes as no surprise that you are an engineer. I am really looking forward to seeing some of your results.
--
Tengo una remera del Che, y no sé por qué

 

[Vincenzo Miceli]

I wish I had the courage to try something like that. Your entire
setup is quite impressive. It comes as no surprise that you are an
engineer. I am really looking forward to seeing some of your results.
--
Tengo una remera del Che, y no sé por qué

Steveo T, I'm working as Process Engineer, but I'm a theoretical Physicist

I haven't used the modified *ist D yet, but I added to the web page a picture of M42 taken with the regular *ist D.

Here is the picture. It is made of multiple 10s, 30s, 120s and 180s images, all taken with noise reduction off. Temperature was about 7C. I took dark fields, bias, flats and flat darks to do the calibration. I still need a lot of work to make this image release its full potential... PP is more difficult than actually taking the shots!

Regards,

Vincenzo

 

[david_n]

--
Hi there.

I have been using an istD for astrophotography for some time and find that the dark frame subtraction in camera is far superior to anything I can construct myself (using Deep Sky Stacker) including flats, offsets and dark frames when in the noise off mode. The price is of course half the exposure time. I feel that the quality of the end product is worth it for myself. Here is an image of the Orion nebula M42 using in camera dark frame subtraction:
http://picasaweb.google.com/dahyon2001/OrionM42060209#5309368060244824578

I find the idea of an istD that is IR enabled very appealing.
Good Luck and clear skies.
David

 

[Vincenzo Miceli]

Hello David,

In camera noise is something I'm planning on testing for sure. I like your image! What optical system did you use?

Vincenzo

--
Hi there.
I have been using an istD for astrophotography for some time and find
that the dark frame subtraction in camera is far superior to anything
I can construct myself (using Deep Sky Stacker) including flats,
offsets and dark frames when in the noise off mode. The price is of
course half the exposure time. I feel that the quality of the end
product is worth it for myself. Here is an image of the Orion nebula
M42 using in camera dark frame subtraction:
http://picasaweb.google.com/dahyon2001/OrionM42060209#5309368060244824578

I find the idea of an istD that is IR enabled very appealing.
Good Luck and clear skies.
David

 

[david_n]

--
Hello Vincenzo

I put the equipment information in the notes section of the picasaweb folder but as this is my first attempt - I seem to have messed up. I use a Pentax SDUFII 100mm F4 astrograph at prime focus together with the istD which is of course unmodded, I have tried it on some emission nebulae but it is just not sensitive enough. I am not skilled in electronics to take on the project you have so clearly and expertly illustrated.
clear skies
david

 

[Vincenzo Miceli]

I see, I haven't tried the 400/2.8 at prime focus yet on M42. Also the camera I used for the picture was taken with a unmodified camera. I also did a shot of horse head nebula with the same camera and sure enough there was nothing. I will have to wait a bit for clear skies and free time before I can test the modified *ist D on astro photos...
Just for curiosity, how do you focus?

Ciao,

Vincenzo

--
Hello Vincenzo
I put the equipment information in the notes section of the picasaweb
folder but as this is my first attempt - I seem to have messed up. I
use a Pentax SDUFII 100mm F4 astrograph at prime focus together with
the istD which is of course unmodded, I have tried it on some
emission nebulae but it is just not sensitive enough. I am not
skilled in electronics to take on the project you have so clearly and
expertly illustrated.
clear skies
david