badsnoopy
One star is enough
Reged: 12/20/04
Posts: 3556
Loc: La Porte, IN
|
|
Thanks Jim. That does show a difference. Something I've been wanting to see.
--------------------
Robert
TV Genesis SDF
Losmandy G11
10x14 Roll roof observatory
Lumenera SkyNyx 2-2m
|
Ben Ritchie
Lost in Space
Reged: 01/31/05
Posts: 4389
Loc: Bosham, UK
|
|
Nice images Jim, thanks - and thanks all for the feedback. Decisions, decisions... 
Ben.
--------------------
Observatory:- Astro-Physics 130EDT StarFire, Baader SkySurfer V, EQ6/pro
Outside:- TeleVue 76is/Vixen Porta II
Eyepieces:- 2-4mm Nagler zoom, 5mm & 6mm Radians, 9mm Nagler, 13mm Ethos, 24mm & 34mm Meade SWAs
|
Tonk
Postmaster
Reged: 08/19/04
Posts: 6100
Loc: Leeds, UK, 54N
|
|
Quote:
The in camera noise reduction is far better than taking dark frames and subtracting in Photoshop as it does not produce 'holes'.
Photoshop is not a good place to calibrate images (its inaccurate, slow, labour intensive ...). You need software that is optimised for calibration like the MaxIm stuff or Images Plus etc. Latest IP has some very smart dark frame calibration that allows you to use temperatue mismatched archive master darks
It more efficient to measure the temperature and archive master darks fo later use. In camera dark reduction doubles the time to capture images and does not deal with the random noise component. Compare that to say a 25 frame averaged archive master dark with only 1/5 the random noise content that didn't waste any imaging time
--------------------
Televue 85/TRF-2008 field flattener, Meade LX200 10", Manfrotto 055SSB tripod/410 geared head/AstroTrac TT320X-AG/056 3D head, GM-8/Gemini, 10 Micron 1000 HPS, Canon 40D (unmodded), Canon 450D (modded w/Astronomiks clip-ins - UV/IR, OWB), Coronado SM60/Lunt B1200/WO diagonal, Baader Herschel Wedge
Leeds Sky Clock Ripon Sky Clock
|
Rammysherriff
Carpal Tunnel
Reged: 03/26/04
Posts: 1967
Loc: Lancs, UK.
|
|
Jim - thanks for the comparison images. The increased red response is very noticeable - and beautiful too!
Ben - still battling it out on eBay for that used 300D!
Tonk - IP 2.75 landed on the doormat yesterday. Crikey!
--------------------
Simon.
One man and his shed: http://s211.photobucket.com/albums/bb288/Astroshed/
|
Ben Ritchie
Lost in Space
Reged: 01/31/05
Posts: 4389
Loc: Bosham, UK
|
|
IP 2.75? D'oh, now i'll have to upgrade ... only just got 2.5
Good luck with the 300D, and the mod - i'm still trying to decide how brave I feel
--------------------
Observatory:- Astro-Physics 130EDT StarFire, Baader SkySurfer V, EQ6/pro
Outside:- TeleVue 76is/Vixen Porta II
Eyepieces:- 2-4mm Nagler zoom, 5mm & 6mm Radians, 9mm Nagler, 13mm Ethos, 24mm & 34mm Meade SWAs
|
Previous
Index
Next
Threaded
[Re: 
Edit
Reply
Quote
