Celestron Nebula Filter for Origin Intelligent Home Observatory

Enjoy the most dazzling views of nebulae with your Celestron Origin when you add this Hydrogen-alpha, Hydrogen-beta, doubly ionized oxygen (Ha-HB-OIII) imaging filter. This specialized filter allows high throughput of light wavelengths from emission nebulae while blocking other wavelengths that could diminish image quality and detail. The result is bright, colorful nebulae images that "pop" with detail against the black sky background.

Get the Most Out of Your Origin: Enhance your Celestron Origin's views and images of nebulae-especially from urban and suburban skies. This filter blocks light pollution, boosts image contrast, and darkens the sky background for noticeably better images.

Nebulae Come to Life:This filter transmits only the key Ha-HB-OIII wavelengths from emission nebulae, making their colors "pop" from the dark background.

Conquers Light Pollution:With this filter, you allow the "good" wavelengths of light from nebulae through but block the "bad" light pollution from reaching Origin's sensor.

Built for Origin's RASA Optics: Unlike similar filters with narrower bandpasses, this filter was engineered specifically to work with Origin's fast f/2.2 optics to allow more of the light you want while suppressing the light you don't.

Easy Installation: Simply remove the optical window from Origin's filter drawer and insert the Nebula Filter. It won't disrupt the optical path of your Origin, and no additional adapters are needed.

Quality Construction:Constructed of Schott glass with anti-reflective coatings, this filter's surfaces are optically flat and free from defects.

How does the Nebula Filter for Origin work? Emission nebulae primarily emit at discrete wavelengths of light-Ha at 656nm, HB at 486nm, and OIII at 496/501nm. By strategically transmitting only these wavelengths of light and blocking the rest of the spectrum, the filter dramatically reduces the effect of light pollution. The "bad" light is blocked while the "good" light associated with emission nebulae passes through to Origin's sensor.

You'll immediately notice much higher contrast in your images, especially from your light-polluted backyard! And since the transmission at the critical wavelengths is so high, the nebula will not be dimmed-only the background will be blacker. You'll also notice some contrast improvement in images of nebulae from darker skies, as the filter serves well in blocking natural skyglow.

• Glass type:Schott B270
• Glass thickness:2mm (0.078")
• Clear aperture:24mm (0.94")
• Coatings:Dichroic multi-bandpass and multi-layer anti-reflection coatings
• Filter cell: Aluminum, black anodized
• Filter threads:M28.5 x 0.6, fits standard 1.25" filter threads
• Height of cell:6mm total (4mm shoulder height, 2mm thread height)
• Solar Warning

Nebula Hunting

The Nebula Filter is perfect for imaging emission nebulae like the North America Nebula (NGC 7000), Lagoon Nebula (M8), Orion Nebula (M42), the Carina Nebula (NGC 3372), and dozens more. The imaging filter offers maximum light transmission in the key Ha-HB-OIII wavelengths, producing high contrast for emission nebulae like these.

The transmission spectrum for the Nebula Filter is 85% or greater at key wavelengths (486nm, 496nm/501nm, 656nm) and less than 0.5% transmission elsewhere. As a narrowband filter, it blocks much of the visible spectrum and only lets these specific wavelengths through. Because of this, you should not use this filter while observing or imaging broadband emission objects, such as galaxies and star clusters. For those objects, you'll achieve the best results by removing the nebula filter and reinstalling Origin's clear optical window.

Other similar imaging filters on the market have much narrower bandpasses at the critical Ha-HB-OIII wavelengths. Unfortunately, these filters block much of the incoming Ha-HB-OIII light for an f/2.2 optical system like Origin's 6" RASA. This is because a RASA brings light into the filter at a steeper angle, which causes a spectral shift. If you use filters not explicitly designed for use at f/2.2, some of the light from the nebula will be blocked, resulting in a dimmer image. The Nebula Filter for Origin was custom-engineered to work at f/2.2, so none of the "good" light from the nebula is inadvertently blocked by the filter.

Body and Storage

The filter features a machined aluminum black anodized cell with a knurled rim for easy grip during installation. We've added anti-reflection coatings to help suppress reflections from the glass. The filter fits directly into the filter drawer in the Celestron Origin's front lens cell, where the optical window sits. Simply remove the clear window and replace it with the filter. Origin maintains its optical performance with the filter installed. No other adapter is needed.

Each filter comes with a foam-lined plastic storage case to safely store the filter or the optical window that came with your Celestron Origin when not in use.

Celestron tests every Nebula Filter for Origin individually to verify its performance. Along with your filter, you will receive a spectral transmission graph (like the one pictured above) showing the results of your filter's test and verifying it performs as expected throughout the spectrum.

We utilise the Australia Post network for delivery. 

Dispatch is within 2 business days of an order being placed.

Delivery timeframe is 5-7 business days

• If you are unavailable at the time of delivery re-delivery fees may apply.

If you want to return an item purchased from the site, please refer to our Returns Policy below which will inform you as to whether you are entitled to return the goods you have purchased.

Once you have established if you are eligible to return your goods, please call our Customer Service team, on 13 FOTO (133 686) and they will organise for you to return your goods using the Australia Post eParcel Post Returns service.

1. Faulty, Damaged or Defective Product & Product Return

1.1 A product is considered faulty if it does not work when first taken from its packaging or if it shows signs of failure within 14 days of delivery.

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1.5 Where a product is provisionally determined to be defective we will arrange to replace the product.

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Product Return

1.13 Subject to the exclusions in clause

1.14 below, if you are dissatisfied with the product you have purchased (but the product is not faulty as set out in clauses 12.1 - 12.12 above), you can exchange the product within and including 14 days from the original receipt of the item(s) ("the Camera House 14 day exchange policy") on the following terms:

(a) it is your responsibility to present the product with which you are dissatisfied to a Camera House Store within 14 days from your original receipt of the items;

(b) you must provide original tax invoice and photo identification to the nominated Camera House Store with the Product;

(c) you may exchange the product to the original tax invoice value of your goods purchased online;

(d) you may exchange the product once only;

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(a) labour expenses;

(b) delivery expenses;

(c) pre-paid gift cards;

(d) digital content;

(e) any product that has been damaged or abused;

(f) any item with a missing component (for example, instruction manual, cables, software cd/dvd, charger, battery, warranty card, camera strap and any other components supplied by the manufacturer).

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2.3 Replacement products are provided with the same warranty as the original product.

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8. Warranty Coverage

8.1 The majority of items sold are covered by a minimum 12 months manufacturers' warranty.

8.2 Manufacturers Warranty is valid within Australia only and commences from the purchase date on your invoice