No. The Lumicon Night-Sky H-Alpha Filter was designed exclusively for specialized dark sky astrophotography. It is simply a deep red filter intended for nighttime use with Kodak Tech Pan black & white film. In pure reflectors, it will work well. In refractors, not so well, because of its very broad band in the infrared. In Schmidt-Cassegrains, its performance is intermediate. Yes. The sizes are 48mm, 58mm, and 77mm. The 48mm fits all 2" eyepieces and accessories.

The Deep Sky Filter is basically a general-purpose light pollution filter that restores a dark sky background for viewing and photographing deep sky objects from cities. It is the best light-pollution filter for all astrophotography on the market today. Visually, the Deep Sky Filter is the most useful filter under light-polluted skies, from where it reveals star clusters, galaxies and nebulae.

Not very well. With enough aperture and patience, any filter will work for photography. The Oxygen III filter's narrow band-pass is located near the peak sensitivity of the human eye, and away from light-pollution lines, so it works well visually. For most deep sky astrophotography, the broadband Deep Sky Filter is your best bet.

Yes, at low magnification, but do not expect nebulae to start popping out all over the place. What the Lumicon Deep Sky filter will do is darken the background of space, providing a more aesthetically pleasing view of the sky.

Lumicon recommends the Deep Sky filter because it has the widest band-width among Lumicon's nebula filters. The wide band-width of the Deep Sky allows for shorter exposure times, which makes for easier astrophotography of deep-sky objects. This is not a recommendation against narrower band-width filters, such as the UHC or OIII, which can be used to produce higher-contrast pictures. These narrower filters are more "challenging," however, because they require longer exposure times.

The UHC filter is THE all-around nebular filter. It specializes in showing nebulosity, even outperforming the Deep Sky Filter under suburban skies. The UHC filter is a visual-use-only filter, but it can be used in this capacity to great advantage from both suburban and dark-sky sites. You would purchase the OIII and H-Beta filters separately only for specialized high-contrast, and comparison viewing of certain nebulae.

Lumicon's Neutral Density Filter is available in three transmissions: 13%, 25% and 50%. This means that they are blocking 87%, 75% and 50% of the light across the visible spectrum. Only for lunar and planetary observing, and even then, the only useful combination is probably a neutral-density or polarizing filter to reduce glare, in series with a color filter to enhance specific details.

For those who have inadvertently lost track of the identities of their Lumicon filters, follow these guidelines: The traditional Deep Sky Filter (Visual & Photographic) will make the daytime sky or fluorescent lights appear a deeper blue than will the Ultra-High-Contrast Filter. Its reflection from one side of the filter is silvery, and from the other side, green-yellow. Between the Oxygen III Filter and the Deep Sky Filter, the filter that shows the Orion nebula best is the Deep Sky Filter.

The Comet Band Filter is basically a nebula filter that happens to show the ion tails of gaseous comets quite well. It can be used on other objects. The filter has a narrow band-pass of 25nm that isolates the 501nm Oxygen III and 514nm Cyanogen lines.

A Hydrogen alpha solar filter is a filter that allows only a narrow band of wavelengths through, in this case those wavelengths that correspond to the center of the red hydrogen-alpha spectral line at 6562.8 angstroms. While white light observers see the solar photosphere, hydrogen-alpha observers see the solar chromosphere. For good chromospheric detail, a hydrogen-alpha solar filter must perform with a sub-angstrom bandpass at the eyepiece end.

The particular construction used will differ as to the type of device. In general a PV device usually consists of: Note that this is a general description only. For example, a widely available solar cell uses three different layers of semiconductor pairs. In the endless quest for economy and efficiency, new ideas and permutations are always being tried.

Virtually all the brighter deep space objects (open and globular star clusters, galaxies, and nebulae) and most solar system objects. Where binoculars really excel, though, is the showcase deep space objects ? they frame these objects in a way that few telescopes ever can for a true wide-field stereo viewing experience.

The Night Sky Network is a partnership of amateur astronomy clubs, NASA, Astronomical Society of the Pacific, and the Astronomical League. Amateur astronomers regularly share their knowledge, time, and telescopes to bring amazing aspects of astronomy to the public. In 2002, the Astronomical Society of the Pacific conducted a survey of amateur astronomers to determine the nature of outreach by amateurs. In the survey, amateurs express the need for support of their outreach efforts.

That depends. If you only want to look at prominences and flares extending from the solar limb, then a bandpass of 3 to 10 angstroms is quite sufficient. However, such wide bandpass filters should be used with an occulting disk or other energy rejection method, since the solar disk at this bandpass is bright enough to be extremely uncomfortable and perhaps dangerous to vision. To see chromospheric detail on the solar disk, the bandpass must be much narrower.

Yes we do night photography…..if you are up to it. It is included in some packages and is available in other for a small fee. Check your package and then consider having it done. The results are very worthwhile.

The Night Sky Network is sponsored and supported by JPL's PlanetQuest public engagement program. PlanetQuest is a part of JPL's Navigator Program, which encompasses several of NASA's extra-solar planet-finding missions, including the Keck Interferometer, the Space Interferometry Mission (SIM), the Terrestrial Planet Finder (TPF), the Large Binocular Telescope Interferometer (LBTI), and the Michelson Science Center.

If it happens, Sky will re-place it. If it is your fault due bad treatment of the card, Sky and/or we may charge you for that. You can demand a refund for unauthorized transaction that has been taken from your credit card. Simply inform your credit card company. Finally, we can not accept any other payment method.

Lumicon is a not-for-profit organization with the mission of bringing the light of Christ into the lives of people who live in a digital culture. As a division of UMR Communications, Lumicon is built on the UMR foundation of more than 150 years of experience helping churches, church agencies and other groups communicate their stories of ministry and service.

For situations where the septic gas odor (hydrogen sulfide or "sewer gas") is coming out of the plumbing vent pipes on the roof. In some instances, city-sewer connections bring sewer gas into the home's plumbing vents. The Odorhog? filter has proven beneficial in those cases too!

NOAO does not keep track of unexplained phenomena in the sky, so I cannot tell you for certain what it is that you saw. However, there are several possibilities: First of all, it could not be a supernova because they become very bright for weeks to months, not just for a few seconds. Supernovae that are bright enough for the naked eye to see are also very rare. If the object was moving, there are a few possibilities.