With the Ramsden eyepieces, you can see about 40 degrees wide or about 53 ft. at 1000 yards at 40x power. The wide field eyepieces allow you to see about 55 degrees wide.

Answer: -- The magnification of any eyepiece used with your telescope will be the focal length of the telescope (consult your manual) divided by the focal length of the eyepiece. A telescope with a focal length of 1200mm will yield a magnification of 60x when you insert a 20mm eyepiece into the focuser. A telescope with a focal length of only 600 mm, however, will yield only 30x when used with the same 20mm eyepiece.

During normal shooting, the photographer's face and the camera's eyecup work together to shade the viewfinder and prevent light from entering the metering system of the camera through the viewfinder. When the camera is on a tripod, light can enter the viewfinder from behind the camera because the photographer may be standing away from the camera.

Answer: -- ALWAYS start observing with the lowest magnification eyepiece available until you become skilled in the use of your telescope. This will be the eyepiece marked with the BIG number (longer focal length ), not one of the smaller numbers. Again, the number you see on the eyepiece is the focal length, not the magnification.

Answer: -- A low magnification eyepiece has a wider field of view (the amount of sky you see when looking through the eyepiece) than a high magnification eyepieces. The low-magnification eyepiece therefore makes it easier to "capture" an object you are trying to find in your telescope. Your lowest magnification eyepiece will also give you the sharpest image as well as the brightest image .

Answer: -- Once you have located an object with your low magnification eyepiece, move the telescope so the object is as close to the center of the field of view as possible. Replace the low magnification eyepiece with one of higher magnification. If the object is not visible after you have changed to the high magnification eyepiece , go back to the low magnification eyepiece and start again.

It blocks stray light from entering viewfinder when your eye is not up to the eyepiece--like when shooting from a tripod. Since the exposure is determined from light bled from the viewfinder image, light entering the pentaprism could find its way to the exposure sensor. This could cause underexposure. There is nothing terribly special about this piece. If you lose it, just remember to cover the eyepiece with your hand or something else opaque when the exposure reading is being taken.

Answer: -- The telescope is not only magnifying the object you are observing in the sky, it is also magnifying the earth's rotation! The more magnification you use in your telescope, the quicker an object drifts out of the field of view. Manual telescope mounts will require you to continually "recapture" the object by moving your telescope slightly. Motorized mounts move the telescope for you and keep the object in the eyepiece.

least one participant plans to ride the high-speed catamaran from Bar Harbor to Yarmouth and back on Saturday, June 20. Contact Dewey Dykstra if you would like to join him.

The following is a list of telescope vendors and telescope models that will work with the EIE. All refractors and Schmidt-Cassegrain telescopes will take the EIE. Some Maksutov-Cassegrain telescopes will accommodate the eyepiece, and so will a limited number of reflectors. EIE's are not suitable for Dobsonians or other telescopes that do not have short in-focusing rack-and-pinion focusers.

To find out what magnification you will get, divide your main objective's focal length (printed on the telescope tube or listed under specs) by the eyepiece focal length--in this case [the EIE], 10.5 mm. So, for a 700 mm focal length refractor such as a typical 60 mm department store telescope, this eyepiece will yield about 67 power (67x) [700 divided by 10.5 = 67].

The 416 uses the same eyepiece, plus the same medium and long eyepiece extensions as the ARRIFLEX 235.

You must use the Erect Image Prism (supplied with the scope). Using the eyepiece straight through the scope without the diagonal can be done but it will yield an upside down image. For more on this topic refer to the section on Image Orientation on p.22 of your user’s manual.

For standard eyepieces with a 50 degree apparent field of view, the Plossl eyepieces are a good choice if your telescope’s focal ratio is f-7 or less. For longer f-ratio instruments, simpler eyepieces such as Kellners will be sufficient. Choose eyepiece focal lengths that wont give you a duplicate magnification when a Barlow lens is used. For example, do not buy a 10 mm and a 20 mm eyepiece with a 2X Barlow.

In eyepiece-projection photography, the telescope eyepiece projects the image onto the film plane. The camera is directly attached to the telescope, usually with a suitable adaptor. It gives a higher magnification than prime-focus photography.

There is a variety of different digital eyepiece cameras available designed specifically for use with standard (monocular, binocular, or trinocular) microscopes. The Dino “AM” and “EM” series are compatible with both the 23.2 and 30mm diameter ocular tubes found on most standard microscopes.

During normal shooting, the photographer's face and the camera's eyecup work together to shade the viewfinder and prevent light from entering the metering system of the camera through the viewfinder. When the camera is on a tripod, light can enter the viewfinder from behind the camera because the photographer may be standing away from the camera.

I don’t know. They are occasionally found on the used equipment shelves at scope shops, and are sold (sometimes in dangerously combustible plastic barrels!) with some department store telescopes.

It is not recommended to use any eyepiece lower than 32mm on telescopes with aperture of smaller than 8". If 40mm is used as a low magnification eyepiece for a 6" telescope, you are risking seeing the secondary mirror. So for a good low magnification view on a 6" Newtonian you should use a 32mm eyepiece.

There is a wealth of historical, outdoor, and fun things to do in the area. Please take a few minutes to review our area information page, or visit the State of Montana’s travel site at www.visitmt.com. If there is any question you have that we have not answered, please let us know and we will find the answer if possible. Contact us at info@fairmontmontana.com. Home | Hot Springs | Lodging | Activities | Dining | Meetings & Events | About Us | Photo Gallery | Specials & Packages

Communities are strongly encouraged to submit one application form each of the eligible communities. Only one application will be funded in an eligible community.

There are a couple of ways you can do this. For a listing of community dental clinics in the state, click here. A new window will open and you can sort the list by zip code by clicking on the column header. Click on the name of the clinic to see what types of insurance they accept. You can also call your local dental society by clicking here. Staff there can assist you in finding general dentists or specialists in your area.

If you have e-mail, you can join the FAA On-Line Loop. The loop is a place where food addicts can share on FAA Steps and topics of interests and questions/comments about the experience, strength and hope of FAA membership. The only requirement for joining is that you have the desire to stop eating addictive foods. For more on the loop, please click here. We also have FAA meetings on-line. For more information, please visit our FAA on-line page.

The permanent hair at the back of the head is referred to as donor hair. The donor area is genetically resistant to Male Pattern Hair Loss (MPHL). Hair transplantation is the relocation of hair follicles from the donor area to the balding areas on the front and top of the head. Because these hairs originally came from the donor area and are resistant to typical MPHL, they are genetically programmed to grow for the rest of one’s lifetime.

Use the ACR Find a Rheumatologist feature to find a rheumatologist by name, to browse a list of rheumatologists by geographic area, or to locate a pediatric rheumatologist.

Please view the Meetings & Calendar link for a current list of monthly meetings. For further questions, please call us directly.