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What is a hydrogen alpha telescope?

Complete H-alpha telescopes, ready to use from the start for visual observing and imaging the sun at 656.28nm wavelength. By far the most vivid and entertaining emission line, it will show you many details of the sun, like protuberances and filaments..

What is an OIII filter?

OIII filters are one of the narrowest types of narrowband filter, giving the greatest boost in contrast for object, emitting most of their light in the emission lines triply ionised oxygen, generally planetary nebulae and supernova remnants.

How do I choose a solar filter?

Pick one that suits your camera and shooting preferences. Solar filters that transmit white light are the most popular and least expensive types. However, photographers who take solar shooting seriously, and want to capture minute detail on the sun, may prefer H-alpha filters.

What filters are needed for astrophotography?

The most common line filters for astrophotography include:

  • Hydrogen Alpha (656nm).
  • Hydrogen Beta (486nm).
  • Oxygen (OIII – 496nm and 501nm).
  • Sulfur (SII – 672nm).

What filter is best for Orion nebula?

Best Nebula Filters – For Selected Objects

Nebula Name Best Filter
M43 Orion Nebula H-Beta
M57 Ring Nebula UHC
M76 Little Dumbbell Nebula UHC
M97 Owl Nebula O-III

Do you use a UV filter for astrophotography?

There is no need for a UV filter to block UV for any photography with a digital camera because the color filters over the sensor block UV. Most modern lenses also block UV. In some situations, you may want a UV/clear filter for lens protection, but never on telephotos and not for night photography.

Are CLS filters good for galaxies?

These filters can be especially helpful with DSLR cameras and red-hydrogen alpha emission nebula. It is generally thought that these filters don’t work with broadband or continuum deep-sky objects, such as reflection nebulae or galaxies.

What filter is best for galaxies?

Multi-broadband filters are best used on astronomy targets that emit light over a broad part of the spectrum, namely galaxies, but also including star clusters, reflection nebulae, and dark nebulae. Multi-broadband filters work great on any type of color camera, even stock DSLRs!

What is a UHC filter used for? The UHC filter permits superb views of objects like the Orion, Lagoon, Swan and other extended nebulae. It performs well in smaller aperture instruments owing to its greater light transmission than the O-III, yet still suppresses light pollution well. The UHC filter is the best all-round dark-sky nebula filter.

What color is hydrogen alpha filter?

H-alpha (Hα) is a specific deep-red visible spectral line in the Balmer series with a wavelength of 656.28 nm in air and 656.46 nm in vacuum; it occurs when a hydrogen electron falls from its third to second lowest energy level.

What is the best filter for nebula?

An O-III filter is the best choice for most planetary nebulae, and it improves many emission nebulae as well.

What Colour is hydrogen alpha?

Untitled Document. Imaging through narrow band hydrogen alpha filters can bring remarkable enhancement to objects with singular or dominant emission in the hydrogen-alpha line. These objects are mostly red emission nebulas but can also be complex nebulas with a dominant hydrogen-alpha emission component.

What does a green filter do to white light that shines on it?

If you pass white light through a red filter, then red light comes out the other side. This is because the red filter only allows red light through. The other colours (wavelengths) of the spectrum are absorbed. Similarly, a green filter only allows green light through.

What is a UHC filter?

UHC filters or light pollution reduction filters are designed to selectively reduce the transmission of certain wavelengths of light;especially those produced by artificial light.

What is ha in astrophotography? Use a DSLR Ha Filter for Astrophotography

H-alpha is a specific deep-red visible spectral line with a wavelength of 656nm. Many nebulae in the night sky (and even some galaxies) emit a strong signal of light in this wavelength and a hydrogen-alpha filter helps to isolate and record this signal with your DSLR camera.

How do you combine H-alpha with RGB?

Why is H-alpha red? H-alpha (Hα) emission is the red visible spectral line created by a hydrogen atom when an electron falls from the third lowest to second lowest energy level. This transition corresponds to a wavelength of 656.28 nm (red light) and is the first transition in the Balmer series.

What is an SII filter?

Astronomik SII 12nm Filter Transmission Curve. The Astronomik SII-CCD filter is a narrow-band-filter for CCD photography. The filter lets the light of the ionized sulfur (SII) pass, and blocks nearly the whole remainder of the visual spectrum as well as IR, in which the CCD is sensitive.

What is ha OIII and SII?

Traditionally the filters used are. Ha (Hydrogen Alpha) OIII (Oxygen III) SII (Sulphur II)

What Colour is SII?

The normal way of mapping Ha, OIII and SII to the RGB colour channels is Ha to green, OIII to blue and SII to red. This is known as the Hubble pallet and made famous by the Hubble Space Telescope’s image of the Pillars of Creation.

What color is Oiii?

For example, OIII is actually in the blue-green part of the spectrum, so it could be assigned a turquoise color.

What filter do you use for the moon?

What size solar filter do I need?

Choose a filter whose size matches the OD of your telescope’s front end, or that is up to 0.25 inches larger than the front end (for Orion Glass Solar Filters only).

What is the blue filter for in telescopes?

#80A Blue (29% transmission)

The Blue Filter is one of the most commonly used filters amongst the entire spectrum of filters. It is perhaps the best filter for the study of detail on Jupiter and Saturn. It enhances the contrast of rills and festoons in Jupiter’s cloud belts, as well as details of the Great Red Spot.

Which filter is best for galaxies? Multi-broadband filters are best used on astronomy targets that emit light over a broad part of the spectrum, namely galaxies, but also including star clusters, reflection nebulae, and dark nebulae. Multi-broadband filters work great on any type of color camera, even stock DSLRs!

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