667040

Celestron CGE Pro 925 Manual

44
Zoom out
Zoom in
Previous page
1/72
Next page
44
After looking at the night sky for a while you may want to try photographing it. Several forms of celestial photography are
possible with your telescope, including short exposure prime focus, eyepiece projection, long exposure deep sky, terrestrial
and even CCD imaging. Each of these is discussed in moderate detail with enough information to get you started. Topics
include the accessories required and some simple techniques. More information is available in some of the publications listed
at the end of this manual.
In addition to the specific accessories required for each type of celestial photography, there is the need for a camera - but not
just any camera. The camera does not have to have many of the features offered on today's state-of-the-art equipment. For
example, you don't need auto focus capability or mirror lock up. Here are the mandatory features a camera needs for celestial
photography. First, a “B” setting which allows for time exposures. This excludes point and shoot cameras and limits the
selection to SLR cameras, the most common type of 35mm camera on the market today.
Second, the “B” or manual setting should NOT run off the battery. Many new electronic cameras use the battery to keep the
shutter open during time exposures. Once the batteries are drained, usually after a few minutes, the shutter closes, whether
you were finished with the exposure or not. Look for a camera that has a manual shutter when operating in the time exposure
mode. Olympus, Nikon, Minolta, Pentax, Canon and others have made such camera bodies.
The camera must have interchangeable lenses so you can attach it to the telescope and so you can use a variety of lenses for
piggyback photography. If you can't find a new camera, you can purchase a used camera body that is not 100-percent
functional. The light meter, for example, does not have to be operational since you will be determining the exposure length
manually.
You also need a cable release with a locking function to hold the shutter open while you do other things. Mechanical and air
release models are available.
Short Exposure Prime Focus Photography
Short exposure prime focus photography is the best way to begin recording celestial objects. It is done with the camera
attached to the telescope without an eyepiece or camera lens in place. To attach your camera you need the Celestron T-
Adapter (#93633-A) and a T-Ring for your specific camera (i.e., Minolta, Nikon, Pentax, etc.). The T-Ring replaces the
35mm SLR camera's normal lens. Prime focus photography allows you to capture the majority of the lunar disk or solar disk.
To attach your camera to your telescope.
1. Remove all visual accessories.
2. Thread the T-Ring onto the T-Adapter.
3. Mount your camera body onto the T-Ring the same as you would any other lens.
4. Thread the T-Adapter onto the back of the telescope while holding the camera in the desired orientation (either vertical or
horizontal).
With your camera attached to the telescope, you are ready for prime focus photography. Start with an easy object like the
Moon. Here's how to do it:
… 44 …


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Celestron CGE Pro 925 at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Celestron CGE Pro 925 in the language / languages: English as an attachment in your email.

The manual is 3,77 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info