Pentax
Refraktoren von PENTAX
Pentax refractors are specialists for one thing above all: They are excellent optics for photography. In addition, the refractors have a very large field of view which is free of aberrations - even without additional field flatteners. This was certainly a convincing argument for Pentax refractors, especially if you think of the always-increasing chip-size of modern digital cameras.
Unfortunately, PENTAX has completely stopped the production of astronomical refractor telescopes. Unfortunately, we cannot order any parts, nor do we have any remaining telescopes in stock.
We are still producing adapters from Baader Planetarium for the Pentax system. With the Baader M68 system we offer an adapter solution for the eyepiece side of Pentax refractors, which allows the use of the complete range of Baader accessories.
On our www.baader-planetarium.de website we had a presentation of the PENTAX refractors, which we would like to make available to you here as a reference in PDF form (sorry, German language only).
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Important Care Tips for astronomical instruments
Please, observe the following guidelines to protect your telescope/mount and avoid damage or even loss of warranty.
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Rated: 0
12/2/2020 9:05 AM
Baader Hyperion 68° Eyepiece Set (Starter)
Does these eyepieces working good on a fast telescope? Like f4.4 or not?
Answer rated: 0With such a fast telescope, you should always use a coma corrector like the MPCC #2458403: Visual Version (V-1 Set), then they work fine.
The eyepieces do not correct coma and would show the coma produced by the teelscope.Answer by: Baader Web Team (Admin) on Dec 2, 2020 9:50:00 AMRated: 0
12/1/2020 7:10 PM
Baader Standard Base - for MQR III&IV, for Witty One & for V-Bracket
Hello,
I've bought the "Baader Standard Finder Base" for mount in a new BDS-RT. What type of M5 screws must I use for it? What is the aproppiate lenght for the M5 screw?
Thanks.
Answer rated: 0The screw would be a M5x13 with a 3mm cylindric head.Answer by: Baader Web Team (Admin) on Dec 2, 2020 8:56:00 AMRated: 1
12/1/2020 3:52 AM
Research Grade TZ-3 Telecentric System (3x focal length)
Which side goes into the telescope and which goes into the solar filter? I assume the side with the small lens needs to face the telescope, and the side with the large lens should face the H-alpha filter / camera. Is that right? I find that counter-intuitive, because the cone of light should be wider on the telescope side, is that not so?
Answer rated: 1Its very easy: There is the name of the item written on it. When you are behind the telescope, were the camera/eyepiece is, you must be able to read the text (text is not upside down) Means the big lens points to the filter/camera/eyepiece, the smaller one to the telescopeAnswer by: Baader Web Team (Admin) on Dec 1, 2020 2:37:00 PMRated: 0
11/30/2020 6:23 PM
Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2")
I have a Celestron Regal 100 ED spotting scope. If I upgrade the supplied zoom eyepiece to the Hyperion can I expect any improvement in the clarity of the image. I find the focus a little 'soft' above 50x.
Answer rated: 0Maybe... The Hyperion Zoom is designed to work at high magnifications at the telescope. But the eyepiece which is included with the Regal spotting scopes usually isn't that bad, either, and the prisms inside most spotting scopes are designed to work for terrestrial magnifications, as they are seldom used at higher powers than 60-80x.
So, we can only guess if the weak point in the chain is the eyepiece or the spotting scope. The image will not get worse by using the Hyperion Zoom, but we can't guarantee if it will improve.Answer by: Baader Web Team (Admin) on Dec 1, 2020 11:02:00 AMRated: 0
11/30/2020 4:37 PM
Baader T-2 / 15 mm Extension Tube (T-2 part #25A)
I would like to experiment ep projection with my Morpheus eps and an APS-C Mirrorless camera with T2 adapter mounted on the camera flange. Is the recommended extension tube still 30mm, even if the Mirrorless camera backfocus is 17,7mm instead of the 44-46,5mm of a typical DSLR? Or is it lower (15mm, even less?) I am wondering if I should buy just the M43-T2 adapter or also the extension tube. And a 7.5mm M43 extension is already provided with Morpheus EPs
Answer rated: 1The 30mm extension for APS-C is calculated for a DSLR with an additional backfocus of 55mm incl. T-2-adapter. You get this distance with T-Rings which provide the standard T-2-distance of 55mm which is required by old camera lenses with T-thread.
Our MFT-T-ring provides both: The standard distance of 55mm, or a shorter adaptation when you remove the extension.
For an APS-C, you should have approximately 55+30=85mm between the T-thread at the eyepiece and the camera sensor, otherwise there will be distortions or vignetting. This is not an exact distance, but a rule of thumb. With a wide-angle eyepiece, you get get closer to the sensor than e.g. with a Plössl or Ortho.Answer by: Baader Web Team (Admin) on Dec 1, 2020 10:28:00 AM