What is a Semi APO filter?

What is a Semi APO filter?

The Semi-APO filter is actually two filters in one. It combines a stronger violet “Fringe Killer” coating formula within the Neodymium glass substrate of the Moon & Skyglow filter; you no longer need to buy both filters to achieve the beneficial effects of both!

What is a Baader filter?

Baader filter boxes can be attached laterally and above the other to create a sturdy unit. Each filter is then neatly in it’s own drawer and characterised from the front with name, number and size of filter.

Where are Baader filters made?

Agena’s visual solar filters are available in several sizes to fit virtually any finder, binocular, or telescope OTA/dewshield between 40mm and 225mm in diameter. They are made from the famous white light Baader AstroSolar safety film made by Baader Planetarium in Germany.

Who makes Astrodon filters?

Optical Structures, Inc.
We are the high price leader for astronomy filters, with the understanding that you will receive the highest performing most durable and easy-to-use filters for sale on the market. In January, 2018, Astrodon was acquired by Optical Structures, Inc. of Rancho Cordova, CA, the owners of Farpoint, JMI and Lumicon.

Where are Baader eyepieces made?

Introduction. For the past few weeks I’ve had the opportunity to compare a number of Baader Hyperion eyepieces with their equivalents from the Vixen LVW range. The Hyperions are made in China whereas the LVWs are of Japanese manufacture and retail for roughly twice as much as the Hyperions.

Where are astronomik filters made?

Our customers appreciate our uncompromising pursuit and dedication to never-ending improvement to meet and surpass the highest quality standards – Astronomik Filter are “Made in Germany”- and wide range of finely tuned filters to meet nearly all needs. We are now able to guarantee each filter for 10 years!

How thick are Astrodon filters?

3 mm thick
Astrodon filters are high performing, durable filters that provide significant aid for astrophotography and research pursuits. Each filter is constructed using a highly innovative process with a single high quality 3 mm thick fused silica substrate and full hard oxide sputtered coatings.

Are Baader eyepieces any good?

5.0 out of 5 stars Nice views! For those of you who have purchased a telescope and are looking to upgrade your eyepieces, this Baader Hyperion is a good choice. This eyepiece, though large, works very well in my 6″ Nexstar telescope.

Who makes explore scientific eyepieces?

JourneyNorth Inc.
Explore Scientific

Type LLC
Headquarters Springdale, Arkansas
Products Telescopes, spotting scopes, binoculars, eyepieces and microscopes
Owner JourneyNorth Inc. (2014–present)
Website www.explorescientificusa.com

What is UHC filter?

Ultra-High Contrast filters Known commonly as UHC filters, these filters consist of things which allow multiple strong common emission lines to pass through, which also has the effect of the similar Light Pollution Reduction filters (see below) of blocking most light sources. The UHC filters range from 484 to 506 nm.

Where are Baader Morpheus made?

Baader Planetarium is situated near Munich / Germany. The Company was founded in Munich 1966 and has produced over 15000 school type planetaria since then, as well as 500 observatory domes of all sizes.

Are explore scientific telescopes any good?

This telescope is an excellent choice for anyone interested in capturing high-quality deep-sky DSLR astrophotography images. Over the course of 4 years, I photographed more than 50 deep-sky objects with it. The Explore Scientific ED80 tops my list of best astrophotography telescopes for beginners.

What kind of filters does the Baader Planetarium have?

The Original: Baader Planetarium Filters View All Filters (Ultra-) Narrowband / Highspeed Dual-Use (Visual / Photographic) Color / Planetary Filters Polarizer & Neutral Density CCD Narrowband/RGB Filters Photometric-Filters Accessories (UFC, Holder, Boxes) DSLR H-alpha Conversion Filters Solar Observation View All Solar Observation

Does the semi-Apo filter work on FRAC?

The Semi-APO works OK on my frac, but the #8 Light Yellow is more effective in killing the fringe and sharpening the image while of course creating more intensive yellow tint. Check out this recent thread and also post #8 by Don Pensack in this earlier thread for other filter brands.

How good is the Baader 685 nm filter for lunar imaging?

The Baader 685 nm filter has a well-deserved reputation for mitigating the effects of poor seeing when doing Lunar imaging. This year (2018) it proved its worth by permitting the imaging of Martian surface features, despite the veil of dust raised by the planet-wide storm.

How does the Baader Moon & sky glow filter work?

The Baader Moon & Sky Glow filter also has a tiny amount of minus violet character in the shortest wavelengths, but its primary claim to fame is removing some sky glow wavelengths with “notches” in the spectrum. It can be combined with any of the above minus violet filters to yield the contrast enhancement with violet removal.