SKU: 40456261702

Nebula Filter H-Alpha 2-inch 12nm

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Description

Nebula Filter H-Alpha 2-inch 12nmNebula Filter H Alpha 2 inch 12nm Features High quality Explore Scientific H Alpha filter Lets only the emission lines of hydrogen "through" Absorbs almost all of the artificial light More contrast and details for all urban astrophotographers Passband bandwidth: 12 nm H alpha filters can only be used for astrophotography Ideal for use near cities with a slightly brightened sky Also blocks almost all light from mercury and sodium vapor lamps Many of

Nebula Filter H-Alpha 2-inch 12nm

 

Features

  • High quality Explore Scientific H-Alpha filter
  • Lets only the emission lines of hydrogen "through"
  • Absorbs almost all of the artificial light
  • More contrast and details for all urban astrophotographers
  • Passband bandwidth: 12 nm
  • H-alpha filters can only be used for astrophotography
  • Ideal for use near cities with a slightly brightened sky
  • Also blocks almost all light from mercury and sodium vapor lamps
  • Many of the red glowing emission nebulae are only visible to their full extent on photos with these filters
  • In spite of the existing light pollution, this results in surprisingly good image results

 

In addition to the turbulence in the air, the brightening of the night sky is the greatest obstacle to observing faint objects beyond the solar system. Street lights and other artificial lighting mean that the sky in human settlements is no longer properly black. As a result, the contrast and thus the perception of the deep-sky objects also suffer. Depending on the type of celestial object, however, part of the interfering light can be filtered out, thus making it easier to photograph the objects.

The Explore Scientific H-Alpha filter uses the property of the so-called emission mist. These objects glow in certain colors, the so-called emission lines. The emission lines are linked to certain chemical elements - in this case the red glowing hydrogen. This filter blocks all other colors (and thus almost all artificial light) and only lets through the emission lines of the hydrogen. In particular, the disruptive light from mercury and sodium vapor lamps is effectively blocked. The effect is amazing: Suddenly fog becomes visible in the photos in places that appear completely empty without a filter.

The Explore Scientific H-alpha mist filter has been developed exclusively for astrophotography. Especially when the sky is slightly brightened, many emission nebulae only come to light when this filter is used and are shown in full extent on the astrophotos. The H-alpha nebula filters make astrophotography near cities possible and their use leads to surprisingly good image results despite the existing light pollution. A must for every urban astrophotographer.

The Explore Scientific mist filters are supplied with an individual test report - so you can be sure that you are receiving high-quality filters.

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SKU: 40456261702

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4.2 ★★★★★
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Verified Purchase
Diwen
West Palm Beach, US
★★★★★ 5
Everything you wanted put into a art book
I loved this art book. It showed me basically everything I wanted to see from back drops used and unused, old character designs and how some things came to be or what they were inspired by. The commentary is great though rarely confusing (Ex: at one point they commentary refers to a picture in the top right but says "As you can see by the design in the middle" the middle being something completely different) I feel like this book is a must for fans and people interested in the art of the series alike.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2015
B
Verified Purchase
Bunny Wolf
San Leandro, US
★★★★★ 5
This is how you make an artbook!!
It's so awesome to open an artbook and see every stage of the character and how it all came together. It's always fun and interesting to know how Korra was made, and why whe looks the way it looks. It's really cool to read the different ideas that came up for a certain character and why they decided that a certain design worked better than the previous ones! It's also really interesting and delicious to read about how they inspired themselves in known architecture to create the environment in this tv series. I simply loved it and I'm excited to know that I'll be buying the other Korra artbooks!!!
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Reviewed in the United States on November 23, 2014
N
Verified Purchase
Nicolas Calderon Eader
San Leandro, US
★★★★★ 4
Great artwork for a great series!! Recommended to artists, animators and fans of the series
It's been a while since the Avatar: The Last Airbender series ran on TV. I really loved that series because it dealt with a lot of eastern cultures themes and it was not the average children TV show. Despite its children characters the show runners manged to find a balance between drama and comedy. Now about the art book: that series (Avatar) had its own book (all seasons in one single book) but this time we are getting one book entirely dedicated to the first season, which makes it great. Why? Because we are getting more artwork per episode, most of it in full-color. I would have liked to see more of the character design, I mean how they got to the final version. Most of the characters are shown in their final version with some costume variants but that's it, no development. One thing missing this time (both from the series and this book) is the animal designs. They had a lot 2-animal-fusion designs on the previous show but this time we get to see almost nothing. I know it is because the series is takes place mainly in Republic City. And wow! what a nice city it is. All the artwork dedicated to set Republic City's mood, the 1920s, the steam-punk influence, the fashion, everything just fits perfectly! There is a couple of aerial views (day & night) which are my favorite from the book. This new guy they hired to do the background paintings has done a great job! Every background and every building design have so much detail that they will make your jaw just drop. I like the fact they are paintings with no pencil lines, just paint brushed over the design, which makes it look richer! Now, I am giving this book a 4-star rating because of the reasons I have already explained and the fact that we are not getting that much in-depth information like we got from the Avatar art book . I must say this is not an animation book, this is an art book that depicts backgrounds, characters and vehicles. You will get to see a few storyboarded sequences but this book is not intended to teach you about animation. I seriously recommend this book to any person interested in art and animation. The artwork is so well achieved that you will be left wanting to see more.
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Reviewed in the United States on June 3, 2014
F
Verified Purchase
Fred C
Whiting, US
★★★★★ 5
Inspirational for Concepts and Illustration
I am learning to be a Concept Designer and Illustrator and this art book is inspirational. This art book has well presented examples for most every part of the conception and finishing process for characters, environments, costumes, props, and story. It has a good amount of design concepts from everything about the series first season: character designs, character sheets, building and city designs, costumes, vehicles, etc. I only wish is was longer/bigger. They could put all 4 seasons into one large encompassing volume.
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Reviewed in the United States on March 22, 2016
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Verified Purchase
TRF guy
Bozeman, US
★★★★★ 5
The information in the book is good and goes into good detail about the Halo Universe ...
Format: Hardcover
Bought the book as a gift for my 12 year old son. The information in the book is good and goes into good detail about the Halo Universe and the Human-Covenant War. The art work is excellent. Well worth the cost.
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Reviewed in the United States on July 8, 2014

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