|
stefano
member
Reged: 04/20/06
Posts: 81
Loc: Arezzo, Tuscany, ITALY
|
|
Hi guys,
does anybody know if someone has written something about the use of a CCD camera in order to precisely collimate a LX 200?
Has someone of you tried to do that?
Cheers, Stefano
--------------------
Ciao
************************************
"SPECULA IN SANCTAE MAMAE PAGO LOCATA"
MEADE 12" LX200GPS
Main: CCD Starlightxpress MX7C USB
Guide: Pentax 75 SDHF + Starlightxpress MX5C
MPC Obs. Code B38
|
JerryWise
Postmaster
Reged: 12/26/03
Posts: 7006
Loc: Lexington, SC
|
|
I've done it with a TouCam. Works good for the fine adjustments at the end of collimation sequence. More than tweaks of the screws will move the star out of the FOV in longer FL SCTs. Dadgum convenient though. Keeps your neck from stretching and cramping up on bigger scopes.
--------------------
Jerry
LX200ACF 14", Tak FS 152 & TOA 150
AP-1200 & Mach1
|
JAT Observatory
Space Freak
Reged: 02/20/05
Posts: 5859
Loc: Eastern PA
|
|
I have seen anything written on it but it is how I collimate my scope. Follow the same procedure as you would when looking thru the eyepiece. The key is to use a short enough exposure time or a dim star as not to over expose the image as you won't be able to see the diffraction rings.
--------------------
-Marcus
The problem with free speech is even the stupid have a voice.
http://jatobservatory.org
12" LX200R on a Paramount ME
|
Dean
Post Laureate
Reged: 12/31/04
Posts: 4401
Loc: Bailey Co Elev 8780 feet
|
|
I've done it with CCDInspector
http://ccdware.com/products/ccdinspector/
Because gives a quatitative measure of collimation, you can tell how much a given adjustment changed the collimation and from that what adjustments and how much are needed.
When I used it it only took about 4 adjustments to get it right.
--------------------
deanrowe.net/astro
Whats with that avatar?
|
WebFoot
professor emeritus
Reged: 06/02/05
Posts: 506
Loc: Redmond, WA, USA
|
|
I've done fine collimation using my camera. With the primary mirror locked, point the scope at the Milky Way, near the zenith, and take exposures with the image slightly out of focus. You will notice that the very faintest stars are donuts. When the faintest stars in a dense star field are even, round donuts with a one-second exposure, you probably are well collimated.
--------------------
12" RCX400
10" LX200 Classic
Meade 102ED/LXD 650 mount
Sky90
SBIG ST-8XE/AO-7/CFW8
http://www.de-regt.com/Astronomy
|
stefano
member
Reged: 04/20/06
Posts: 81
Loc: Arezzo, Tuscany, ITALY
|
|
Quote:
I've done it with CCDInspector
http://ccdware.com/products/ccdinspector/
Because gives a quatitative measure of collimation, you can tell how much a given adjustment changed the collimation and from that what adjustments and how much are needed.
When I used it it only took about 4 adjustments to get it right.
Does CCD Inspector work well?
Do you recommend it?
Anybody else among the friends reading this post have experienced this method?
Cheers, Stefano
--------------------
Ciao
************************************
"SPECULA IN SANCTAE MAMAE PAGO LOCATA"
MEADE 12" LX200GPS
Main: CCD Starlightxpress MX7C USB
Guide: Pentax 75 SDHF + Starlightxpress MX5C
MPC Obs. Code B38
|
Dean
Post Laureate
Reged: 12/31/04
Posts: 4401
Loc: Bailey Co Elev 8780 feet
|
|
It works well for me. I no longer have an SCT, so I don't use it for collimation any more, but I do use it to evaluate my subs and my focusing (like how much it changes overnight).
--------------------
deanrowe.net/astro
Whats with that avatar?
|
NeoDinian
Experienced Postmaster
Reged: 10/05/05
Posts: 12208
Loc: Rockford Illinois
|
|
I just wish it wasn't so expensive. 
--------------------
Neo... (Jeff)
-=-=-=-=-=-=-
10" LX200-GPS/SMT UHTC "Draco"
 Rockford, Il.
NeoDinian's Eye on the Sky!
Coming soon:
|
|
7 registered and 3 anonymous users are browsing this forum.
Moderator: Joad
Print Thread
|
Forum Permissions
You cannot start new topics
You cannot reply to topics
HTML is disabled
UBBCode is enabled
|
Thread views: 325
|
|
|
|
|
|
|
Previous
Index
Next
Threaded
Edit
Reply
Quote
