If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
|
Thread Tools | Display Modes |
#11
|
|||
|
|||
Camera mounted to a Telescope/Spotting Scope
On Sat, 21 Oct 2017 00:29:28 -0400, m-m wrote:
In article , Old Geezerr wrote: Has anyone used their digital camera mounted onto a telescope? I have good results with a Nikon Fieldscope and Nikon's mount for my DSLR for birding, or a homemade mount that I use with other digital cameras for astrophotography or a GoPro. Here is an example with the DSLR attached: http://www.mhmyers.com/d80/DSC_1516w.jpg And one with a smaller digital camera through the eyepiece of the telescope: http://www.mhmyers.com/d80/DSCN3653w.jpg And a page explaining it all: http://www.mhmyers.com/camera.html Thanks for the links. You showed that necessity is the mother of invention. Dave: There goes the happy moron. He doesn't give a damn. Gee I wish I was a moron. My God, maybe I am |
#12
|
|||
|
|||
Camera mounted to a Telescope/Spotting Scope
On Sat, 21 Oct 2017 16:24:45 -0700 (PDT), RichA
wrote: On Saturday, 21 October 2017 00:14:20 UTC-4, Old Geezerr wrote: On Fri, 20 Oct 2017 17:42:18 -0700 (PDT), RichA wrote: On Friday, 20 October 2017 16:35:23 UTC-4, Old Geezerr wrote: Has anyone used their digital camera mounted onto a telescope? I'm thinking about getting a Celestron reflector scope, primarily for shooting range spotting but also considering photographic use. I have read that reflector type camera lenses have a tendency to produce ghost rings under certain conditions. Any comments? Dave: There goes the happy moron. He doesn't give a damn. Gee I wish I was a moron. My God, maybe I am You need a camera adapter, a T-mount (mounts the camera to the camera adapter. If you are using a Maksutov Cassegrain, you probably won't need an adapter that accepts eyepieces (for more power) as Maks have inherently long focal lengths as it is. Faster refractors can be used at "prime" focus (just using the scope's front lens as the camera lens) but can sometimes benefit from "eyepiece projection" to increase focal lengths. "Digiscoping" or cobbling cameras to terrestrial spotting scopes isn't recommended because intermediary optics used in these scopes results in unacceptably slow photographic speeds (slower than f/11) and focal lengths that can be too long. Below is a common t-ring (t-threaded ring and camera bayonet mounting) attached to a standard 1-1/4" slide-in (to the telescope focuser) telescope adapter. http://www.pbase.com/andersonrm/image/64464511 Thanks for the comment. The Reflex scope I am looking at has T-Adapter threads on it. All I need to do is to get the T-Ring for my Canon camera. Dave: There goes the happy moron. He doesn't give a damn. Gee I wish I was a moron. My God, maybe I am Yes, threading the focuser barrel is a recent innovation. Just remember that because of the large aperture, scopes are susceptible to heat waves so things shot at a distance, over heated buildings, roads, can get blurred. Yep. There's something about watching the "lake" that hovers over a hot highway. Dave: There goes the happy moron. He doesn't give a damn. Gee I wish I was a moron. My God, maybe I am |
#13
|
|||
|
|||
Camera mounted to a Telescope/Spotting Scope
Old Geezerr:
The Canon that I have is a Rebel T5... The Celestron would be a 1250mm lens as the camera mounts right to the telescope rear face via a T- ring. That's OK for Solar System photography. If you want to do deep-sky you're going to need a focal reducer. 1250mm is too great a focal length for most extended objects. I made the photos on this page http://www.primordial-light.com/deepsky9.html with a refractor of focal length 387mm. (530mm Ÿ5 with a .73x reducer = 387mm Ÿ3.65.) Such a telescope is called an "astrograph" or "fast astrograph." It is not suited for visual use with an eyepiece. The Rosette image on that page was made at the native FL, 530mm Ÿ5. Divide it out and you find that this is a 106mm refractor. http://www.primordial-light.com/technique.html. -- I agree with almost everything that you have said and almost everything that you will say in your entire life. usenet *at* davidillig dawt cawm |
#14
|
|||
|
|||
Camera mounted to a Telescope/Spotting Scope
On Sat, 21 Oct 2017 22:06:23 -0400, Davoud wrote:
Old Geezerr: The Canon that I have is a Rebel T5... The Celestron would be a 1250mm lens as the camera mounts right to the telescope rear face via a T- ring. That's OK for Solar System photography. If you want to do deep-sky you're going to need a focal reducer. 1250mm is too great a focal length for most extended objects. I made the photos on this page http://www.primordial-light.com/deepsky9.html with a refractor of focal length 387mm. (530mm Ÿ5 with a .73x reducer = 387mm Ÿ3.65.) Such a telescope is called an "astrograph" or "fast astrograph." It is not suited for visual use with an eyepiece. The Rosette image on that page was made at the native FL, 530mm Ÿ5. Divide it out and you find that this is a 106mm refractor. http://www.primordial-light.com/technique.html. Thanks for the information. I'll have to discuss that with the people at the telescope store when I go to see them. They are the only dedicated telescope store in Tucson, Arizona. That is some snazzy equipment that you have there. Dave: There goes the happy moron. He doesn't give a damn. Gee I wish I was a moron. My God, maybe I am |
#15
|
|||
|
|||
Camera mounted to a Telescope/Spotting Scope
Old Geezerr:
The Canon that I have is a Rebel T5... The Celestron would be a 1250mm lens as the camera mounts right to the telescope rear face via a T- ring. Davoud: That's OK for Solar System photography. If you want to do deep-sky you're going to need a focal reducer. 1250mm is too great a focal length for most extended objects. I made the photos on this page http://www.primordial-light.com/deepsky9.html with a refractor of focal length 387mm. (530mm Ÿ5 with a .73x reducer = 387mm Ÿ3.65.) Such a telescope is called an "astrograph" or "fast astrograph." It is not suited for visual use with an eyepiece. The Rosette image on that page was made at the native FL, 530mm Ÿ5. Divide it out and you find that this is a 106mm refractor. http://www.primordial-light.com/technique.html. Thanks for the information. I'll have to discuss that with the people at the telescope store when I go to see them. They are the only dedicated telescope store in Tucson, Arizona. I forgot to give you the rest of the bad news. While one can make acceptable deep-sky photos with a DSLR, DSLRs are not used in Solar-System photography except possibly some lunar and solar photography. Typically a scientific video camera like those from FLIR https://www.ptgrey.com/usb3-vision-cameras is used. Software helps select the best frames (many will be blurred by atmospherics) and aligns and combines the frames into a still photo. My friend Alan Friedman does it best http://www.avertedimagination.com/latest_1.htm. -- I agree with almost everything that you have said and almost everything that you will say in your entire life. usenet *at* davidillig dawt cawm |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Best way to store Camera & mounted lens in bag? | Mike Jenkins | Digital Photography | 3 | January 24th 07 12:57 PM |
Spotting Scope to Digital Camera adapter | Ernie Willson | Digital Photography | 1 | June 17th 06 12:28 AM |
Attaching a spotting Scope to S1Is | Ernie Willson | Digital Photography | 2 | May 18th 06 05:17 AM |
FA:Skymax 127mm Mak telescope, ideal Astro/Spotting scope or 1500mmf12 T2 mnt lens. | DH | General Equipment For Sale | 1 | August 18th 05 12:56 PM |
FS Meade 0.965 Telescope to Camera Adapter (ebay) | Dave | 35mm Equipment for Sale | 0 | November 5th 04 12:32 AM |