- Summertime - Vacation Time
From August 5th to August 22nd we are on vacation and closed!
- Astronomik Lunar calendar for 2023
The Astronomik calendar of the Lunar phases in 2023 is ready.
- Chistmastime and New Year 2022-2023
We wish you a merry Chirstmastime and a happy and healthy 2023...
- Shipping methods
Shipping as registred good shipment is no longer available
- How to observe planetary nebulae
A very nice introduction to observing planetary nebulas written by Owen Brazell
- Astronomik Lunar calendar for 2022
The Astronomik calendar of the Lunar phases in 2022 is ready.
- Website down
Our website was down on dec 20st...
- H-alpha imaging with a unmodified EOS R
Imaging with an unmodified camera using a H-alpha filter
- Astronomik Lunar calendar for 2021
The Astronomik calendar of the Lunar phases in 2021 is ready.
- Back at work
After our closure during Xmas and new year we´re back at work
Aurora LPR conversion filter
If you take flatfield images with an Aurora flatfield device and use a filter against light pollution (such as the Astronomik CLS or CLS-CCD), you will notice that the RGB histogram looks very unattractive: On the far left a sharp peak for the data from the red channel, on the far right two sharp peaks for the data from the blue and green channel.
It is relatively difficult to achieve a good flatfield correction with such a histogram, because the data in the blue channel are already close to the saturation limit, while the data for the red channel are relatively noisy, because the peak is at the far left.
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typical histogramm with LPR Filter
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typical histogramm with LPR Filter
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With the Aurora LPR conversion film you get a much more balanced spectrum with which you can easily obtain good flatfield data even when using a filter against light pollution. Flatfield correction will be very easy when using this conversion filter!
The Aurora LPR conversion film is available for the sizes 10cm, 160mm 220mm, 315mm and 420mm. The filter foil can be quickly and easily installed in your Aurora.
If you order an Aurora together with ND filter foils or the Aurora LPR conversion foil, the delivery is made with already mounted foils!
Aurora LPR Conversion Filter
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LPR Conversion filter for 100mm and 160mm Auroras
excl. VAT (Non-EU): €8.32 incl. VAT (EU): €9.90 -
LPR Conversion filter for 220mm Auroras
excl. VAT (Non-EU): €14.20 incl. VAT (EU): €16.90 -
LPR Conversion filter for 315mm Auroras
excl. VAT (Non-EU): €20.08 incl. VAT (EU): €23.90
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LPR Conversion filter for 420mm Auroras
excl. VAT (Non-EU): €25.13 incl. VAT (EU): €29.90