Return to the Cloudy Nights Telescope Reviews home pageAstronomics discounts for Cloudy Nights members
· Get a Cloudy Nights T-Shirt · Submit a Review / Article

Click here if you are having trouble logging into the forums

Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu… uh, User

Equipment Discussions >> Electronically Assisted Astronomy

Pages: 1
shkong
super member
*****

Reged: 01/18/13

Loc: WA
canon video camera for astro video? new
      #5952077 - 07/02/13 08:56 PM

I consider using Canon Vixia HF M41 video camera for Astro video.

I try to use it with 10 inch F3.9 Newtonian mounted on CGE,

Has anyone here tried similar things before?

If so, I would like to get advice.

Thanks

Thomas


Post Extras: Print Post   Remind Me!   Notify Moderator  
ccs_hello
Postmaster
*****

Reged: 07/03/04

Re: canon video camera for astro video? new [Re: shkong]
      #5952308 - 07/02/13 11:45 PM

Its CMOS HD image sensor is 2M pxl and type-1/3" sized. Max. long exposure time is 1/6 sec. None of the spec. above is impressive.

Post Extras: Print Post   Remind Me!   Notify Moderator  
shkong
super member
*****

Reged: 01/18/13

Loc: WA
Re: canon video camera for astro video? new [Re: ccs_hello]
      #5952382 - 07/03/13 01:03 AM

Quote:

Its CMOS HD image sensor is 2M pxl and type-1/3" sized. Max. long exposure time is 1/6 sec. None of the spec. above is impressive.




Thanks for pointing out.

But I wish to use it as just starting practice.


Post Extras: Print Post   Remind Me!   Notify Moderator  
mega256
scholastic sledgehammer
*****

Reged: 05/10/07

Loc: N of Tampa
Re: canon video camera for astro video? new [Re: shkong]
      #5952614 - 07/03/13 07:23 AM

Anything with video exposure time of less 4 seconds...
At the min may not be worth the effort.
Not that it cant be done....but it takes the "FUN" out
of it...


Post Extras: Print Post   Remind Me!   Notify Moderator  
ccs_hello
Postmaster
*****

Reged: 07/03/04

Re: canon video camera for astro video? new [Re: mega256]
      #5952655 - 07/03/13 08:08 AM

Vixia HF M41 is a cancorder with a non-removable zoom lens. Optically, a telescope OTA will have to use an eyepiece projection method to couple with your camcorder. EP Projection method, although sometimes may work out, is not a great method to be used in astro.

Clear Skies!

ccs_hello


Post Extras: Print Post   Remind Me!   Notify Moderator  
mclewis1
Thread Killer
*****

Reged: 02/25/06

Loc: New Brunswick, Canada
Re: canon video camera for astro video? [Re: ccs_hello]
      #5952885 - 07/03/13 10:53 AM

Thomas,

Perhaps if you are handy you can remove the lens on the camera and cobble up a simple 1.25" barrel attachment you can try it out on a telescope. With that type of setup you should be able to play around with some neat lunar viewing and with a Barlow lens may some planetary viewing as well. With planetary viewing you'll find the planets very small and somewhat dim which doesn't work well with the automatic gain controls on many cameras (not enough of the object shows up for the circuitry to be able to expose it correctly against the black background ... instead you'll often seen an over exposed blob).

Other inexpensive options are ...

One of the older video eyepieces (sold under Meade and other brand names). Orion also has a similar new product. These are all under $50. These are fun for viewing solar system objects.

One of the low light security oriented video cameras can also be a good choice to start off. The Samsung's are very popular, and there are now a few other options (LnTech for example). These are usually available in the $80-120 range. Most of these cameras can also be used to view some of the brighter deep space objects in addition to the solar system stuff. With one of these cameras you'll also need a C mount to 1.25" adapter ($20-30) and a 12v power source ($10-20).

Along with any true video setup you'll need either a simple video monitor or a video capture device (usually a USB frame grabber). The capture device lets you view video on a PC. They are about $20 and up.


Post Extras: Print Post   Remind Me!   Notify Moderator  
ccs_hello
Postmaster
*****

Reged: 07/03/04

Re: canon video camera for astro video? new [Re: mclewis1]
      #5954376 - 07/04/13 06:47 AM

Better not to remove the lens assembly. These camcorders have many limit switches and they are checked by camcorder main processor. If the limit switches don't work as expected, error code will show.

BTW, a consumer camcorder has a lot of automatic functions and cannot be defeated.

Better pick a more suitable imaging device.

Clear Skies!

ccs_hello


Post Extras: Print Post   Remind Me!   Notify Moderator  
rmollise
Postmaster
*****

Reged: 07/06/07

Re: canon video camera for astro video? new [Re: ccs_hello]
      #5954429 - 07/04/13 08:11 AM

Very few camcorders allow the lens to be removed. You shoot into an eyepiece "afocally." Several brackets are available for that purpose.

Post Extras: Print Post   Remind Me!   Notify Moderator  
ccs_hello
Postmaster
*****

Reged: 07/03/04

Re: canon video camera for astro video? new [Re: rmollise]
      #5955675 - 07/05/13 08:04 AM

Thanks Rod.

My mistake, I should have stated "afocal" imaging. For EP project, the camera has to be lensless.

Clear Skies!

ccs_hello


Post Extras: Print Post   Remind Me!   Notify Moderator  
shkong
super member
*****

Reged: 01/18/13

Loc: WA
Re: canon video camera for astro video? new [Re: ccs_hello]
      #5963011 - 07/09/13 09:20 PM

Hello folks

Thanks a lot for your valuable opinion.

I ordered an used Mallicam Extreme to use for my 10 inch Newtonian.

Alas, do I need focal reducer for my SE 8 scope?

Will MFR-5 Dual Cell Focal Reducer work for that purpose?

Hi Uncle rod I am now reading your excellent article on Mallincam Extreme.

[url=http://uncle-rods.blogspot.com/2012/01/now-in-living-color.

Your review helped me to make a quick decision.

Edited by shkong (07/09/13 09:24 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
mclewis1
Thread Killer
*****

Reged: 02/25/06

Loc: New Brunswick, Canada
Re: canon video camera for astro video? new [Re: shkong]
      #5963906 - 07/10/13 11:26 AM

I would suggest that a focal reducer is very helpful on any f10 SCT.

The MFR-5 is a good choice, as is a Meade f3.3. If you want to try an inexpensive model consider one of the .5x 1.25" models. These won't provide quite as good optical quality but will allow you to gain some experience with a focal reducer. If you already have an SCT f6.3 focal reducer you may also try using that with the .5x reducer, that combination can give you very fast reduction (under f4 and sometimes down close to f3) but the optical quality probably won't be as good as the high end models (the MFR-5/Meade f3.3/Optec .3x).


Post Extras: Print Post   Remind Me!   Notify Moderator  
shkong
super member
*****

Reged: 01/18/13

Loc: WA
Re: canon video camera for astro video? new [Re: mclewis1]
      #5964712 - 07/10/13 08:42 PM

Quote:

I would suggest that a focal reducer is very helpful on any f10 SCT.

The MFR-5 is a good choice, as is a Meade f3.3. If you want to try an inexpensive model consider one of the .5x 1.25" models. These won't provide quite as good optical quality but will allow you to gain some experience with a focal reducer. If you already have an SCT f6.3 focal reducer you may also try using that with the .5x reducer, that combination can give you very fast reduction (under f4 and sometimes down close to f3) but the optical quality probably won't be as good as the high end models (the MFR-5/Meade f3.3/Optec .3x).




thanks mc

As you suggest, I ordered 30$ 0.5 reducer to see what happen.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1


Extra information
7 registered and 9 anonymous users are browsing this forum.

Moderator:  droid, David Pavlich, JayinUT 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 712

Jump to

CN Forums Home


Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics