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: -- 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.

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.

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 .

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: -- Not in your living room. Observing through the window of a house will drastically reduce the performance of your telescope. Go outside. If possible, set your telescope up away from buildings, parking lots, patios or other objects -wooden or cement - that absorb heat by day. These objects radiate heat back into the sky at night and will create air currents that degrade the images in your telescope .

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.

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

There is lots of information online to help you get started observing. First of all, our handbook Meteor Showers and Their Observation: A North American Meteor Network Guide is available online. This NAMN Guide is also available free of charge from our Coordinator in electronic format. Also available is a condensed article on what to record while observing, including blank forms to use for submitting reports.

Answer: -- Dress warmly! The winter sky offers some of the best objects for a telescope and it is a shame to cut an observing session short because you didn't bundle up. Even if you live in a warm area, or view during other seasons of the year, you will be surprised how quickly the air cools at night.

Answer: -- Try to observe with a plan. Choose a few easy objects (large and bright) that can be seen from your location and time of year. Check one of the popular astronomy websites such as Sky&Telescope, http://skyandtelescope.com/ and Astronomy Magazine, http://www.astronomy.com/ for a list of objects currently visible in the night sky . Answer: -- The number on the eyepiece is the focal length of the eyepiece. It is not the magnification of the 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.

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.

Fluoridated toothpaste should be introduced when a child is 2-3 years of age. Prior to that, parents should clean the child's teeth with water and a soft-bristled toothbrush. When toothpaste is used after age 2-3, parents should supervise brushing and make sure the child uses no more than a pea-sized amount on the brush. Children should spit out and not swallow excess toothpaste after brushing.

Answer: C or k identify a compensating eyepiece. Some microscope objectives do not include correction for lateral chromatic aberration. For such objectives (Olympus LB series), the compensating eyepiece completes the correction. WF means widefield; more of the specimen to be seen at a given time. H signifies high eyepoint which means that the user's eyes do not have to be placed very close to the top lens of the eyepiece during observation; a particular boon to eyeglass wearers.

Observations of the afterglows all across the spectrum tell us many things about gamma ray bursts. First, observations of the first afterglow in 1997 confirmed that gamma ray bursts occur in very distant galaxies (see question 2). Second, from observations of the afterglow we can determine how much energy was released in the gamma ray burst. Third, we can determine how much material was present in the vicinity of the gamma ray burst.

First of all, dress warmly when you go out at night! When the sun goes down, temperatures fall and moisture condenses. You would be surprised how cold you can feel even on a hot, summer night. I have been observing on summer nights in North Carolina and needed a sweater and jacket even when the outside temperature is 60 degrees Fahrenheit. If you are not comfortable, then you will not enjoy observing.

The months of health care coverage is based on eligibility as determined by the Graduate School. For the academic year, 2007-08, the dates when coverage begins and ends is provided below. Students must enroll in the health insurance program to receive coverage. Two forms must be completed and approved.

Answer: If you have a private home, come to the Town Offices for your recycling bins (you can sign up at the Recycling/Solid Waste Office or with the Town Clerk) and or stickers for a barrel you purchase yourself. If you live in multifamily housing that uses dumpsters for trash, your housing complex should have well marked recycling toters for your recyclables.

Answer: Call the Law Center for Social Security Rights for a free consultation at 1-800-832-3471 BEFORE you even apply. You may also contact Social Security directly either by phone, 1-800-772-1213, mail, or by visiting the nearest Social Security office.

While the Series IV was mainly designed for deep sky work, it can effectively be used to focus on the planets and Moon as well. In this case, the Series IV Stiletto bayonet assembly is unscrewed from the Series IV body and used separately. This is necessary since the diagonal and transfer lens assembly attached to the Series IV body forms a small telescope specifically designed to magnify the image on the ronchi grating.

Answer: With RegWorks you can create registry backups and restore registry from backups. See the item Backup and restore... on the File menu and the corresponding section in the manual. Make backup copy of your registry now!

Industrial Grade, made by several companies, is optically inappropriate for even naked-eye solar observation. A four inch circular sample independently tested contributed tens of waves p-v of various aberrations to the wavefront. This material is better used as a diffuser than a solar filter, though it will form an image of sorts. Visual Grade, made by several companies, is optically appropriate for observations made far from the diffraction limit.

A pre-telescopic filter is one that fits onto the front, skyward-pointing end of the telescope, so that the light from the sun passes through the filter only once, and does so prior to encountering any of the telescope’s optical elements. The main thing to consider with pre-telescopic filters is that you must make certain they are firmly attached to the front of the telescope. Under no circumstances should wind or an accidental bump be able to remove the filter from the telescope.

It is possible to set the NIRSPEC rotator at a fixed angle other than the default of 0.0, to allow setting the slit PA independently of the AO system rotator setting. This mode can be useful to observers who need to select an arbitrary slit PA, but who also have a large enough separation between their science target and AO guide star that the AO rotator setting is dictated by the needs of the AO system.

Yes. The only difference is in how to plot the position of a geosync satellite on the observation forms. You can certainly observe the satellite over an extended period of time to generate a "pass" with respect to the stars (actually, the stars would be streaks and the satellite would be stationary). To save your sanity, however, I suggest that you simply plot the satellite as a point with respect to the background sky, and identify it accordingly on the chart.

This is probably the most often asked question for all new CPC owners. The most important thing to know is that your main goal in aligning is make sure that targets are in the field of view. If they're at the exact center, great, but this isn't necessary for an enjoyable night of seeing and in most cases, you'll usually just have the target somewhere in the field of view and that's perfect.

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.