Swan Extra Slim Filter Tips - Full Box Of 20 Total 2400 Tips

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March 2021: The idea behind the visual use of blue filters from RGB palettes is that they have much higher transmittances in the blue value and steeper curve slopes than the usual blue filters known from planetary observation - e.g. the Wratten 80A/B/C filters or also Baader's dark blue 435nm and light blue 470nm filters. A CCD or CMOS blue filter allows much more light of the blue reflection nebulae of our galaxy to reach the eye and at the same time filters out the stray light in the green and yellow very effectively. The comparison between the luminance and swan-band images clearly shows the true power of the 15nm Swan-Band filter over a full-spectrum luminance filter. The doubly ionized carbon from Comet C2022 E3 (ZTF) is clearly visible in the images taken with the Swan-Band filter. Due to environmental influences such as light pollution, these are completely absent in my luminance images. For our CMOS-optimized filters we have created the following images showing which side of the filter should face the telescope. Der Himmelshintergrund war mit dem Baader-Filter deutlich dunkler, das Bild ansprechender. In etwa wie der Vergleich von UHC (ohne S) und [OIII] an Nebeln. Das war von den Bandbreiten her auch zu erwarten.

The Swan-Band filter is indeed a very special filter with central wavelength at 512 nm and ≤15nm half-width – for the first time without any O III transmission. It is therefore suitable for a variety of unusual applications some of which require further investigation, whether as an “O III parallel filter” to better remove stars from the image, or as a solar filter in a previously inaccessible section of the spectrum. We would be pleased about your experience reports also apart from the comet photography. Today, filters are placed in the optical path of the telescope, even well in front of the focal plane. This definitely requires some degree of plane parallelism and accurate production of the filter glasses. Swan-Band-Filter wurden bislang nur von Lumicon produziert. Baader hat einen Filter herausgebracht, der sich von den Lumicon-Filtern unterscheidet. This is our own proprietary "emergency solution" for uniting a world were manufacturers all over the world copy from each other - to the point that there are almost a dozen different pitches in use for male and female threads. Traditionally US-companies used to do a UNF-based pitch and the rest of the world went for metric threads - but these do vary from 0.5 to 0.75.Each filter coated individually, with sealed coating edge (NOT cut out of a larger plate with coatings left exposed, read more) Ich habe beide Filter an C/2023 E1 (ATLAS) verglichen. Komet Atlas ist derzeit (Mitte August 2023) noch um 9m5 hell und damit von einem dunklen Standort aus etwas für zumindest größere Ferngläser. Der Komet ist recht groß, 6'. In the old days, colour filters for visual planetary observations were not screwed in the front part of the eyepiece, but were simply placed between the eyepiece and the eye. Plane-parallelism of these filter glasses was not important, because they were not in the optical path of the telescope. If you cancel you must return the goods to us at your own expense. You are responsible for the risk of loss or damage when you return the goods, so you should take out adequate postal insurance to cover their value.

If you receive any damaged items on your delivery, please state the full extent of the damage on the driver’s delivery note when signing for the goods.Lumicon hat 25 nm Halbwertsbreite und erfasst die [OIII]-Linie mit, ist also auch als [OIII]-Filter zu benutzen. Der Baader-Filter ist nur 15 nm breit und blendet diese Linie aus. Dieser Fakt allein wird wohl an einem Kometen nichts machen, wenn er nicht gerade vorm Zirrusnebel steht :) Eine geringere Halbwertsbreite heißt aber höherer Kontrast. The Baader C2 SWAN-Band-Filter with ≤ 15 nm Half-Band-Width isolates the two C2 lines at 511 and 514nm. Since the C2 filter allows only the green carbon transmission to pass through, the dust tail illuminated by the sun could be highlighted very clearly with the new 20 nm H-alpha filter.

The sad effect is that we cannot offer other sizes unless the inquired production quantity were in the range of 250 to 500 pc (depending on size) and the tooling rings or square holders will be paid for, which serve to precisely center each individual filter substrate within the rotating calotte inside the coating chamber. Sorry - as explained above - we just will not coat onto large plates and cut any shape from them, also because such large plates cannot be polished optically flat in the same way we do it. Just in time for the introduction of this new C2 Swan-Band filter, a bright comet, comet C/2022 E3 (ZTF), offered itself as a test object and one of Baader Planetatrium’s customers (Mr Andreas Bringmann) was one of the first testers. The image of that comet is below and was taken from a city with an almost full moon. The image easily shows the amount of “doubly ionized carbon” (the carbon excited to glow radiates only in the wavelengths 511 nm and 514 nm ) emitted by the comet. The filter shows the complete extension of the ion cloud around a comet: What do you look for in an astronomical filter? Everyone has different requirements and goals and with a myriad of filters available today; how do you choose the right filters to unleash the full potential of Astrophotography? Also a only mag 16.2 faint C/2022 U2 (ATLAS), which is overtaken by the mag 5.8 bright C/2022 E3 (ZTF), could be photographed:Just in time for the introduction of the new C2 Swan-Band filter, a bright comet, comet C/2022 E3 (ZTF), offered itself as a test object. Our customer Andreas Bringmann was one of our first testers - see more under TAB Review

Both thread sizes come with our proprietary pitch - which is not the same for the female and male threads. I just bought LRGB 36mm unmounted filters. I have question: which side of filter should be placed towards telescope? Is it better way of distinguish than "more shiny surface towards telescope"? Based on these considerations, soon after the release of their new CMOS filter range, I asked Baader Planetarium if they would lend me a CMOS blue filter Baader RGB B-Filter – CMOS-optimized

You can clearly see the amount of "doubly ionized carbon" (the carbon excited to glow radiates only in the wavelengths 511 and 514 nm ) were emitted by the comet. The commercial disadvantage of this technology lies in the fact that we cannot produce any filter size by simply cutting it from a sheet. For custom-made filters in a requested size we need a minimum production run of 250 pieces. Der Kometenschweif emittiert möglicherweise andere Wellenlängen als der molekulare Kohlenstoff der Koma. Welche Auswirkungen dies hat, muss ich noch ergründen. ATLAS hat ja keinen wahrnehmbaren Schweif.