- Takahashi FSQ-85EDX, quadruplet telescope
- Baader ERF 90mm filter
- astroholgi.de ERF custom adapter for the FSQ-85
- Baader diagonal with Clicklock system
- Daystar Quark Chromosphere filter
- Losmandy G11 mount
- Gemini GoTo controller for Losmandy G11
- Berlebach tripod for Losmandy G11
- power supply consisting of three 12V gel cells connected in parallel
- astroholgi.de cable hub for Losmandy G11
- astroholgi.de 2" adapter for Daystar Quark
- astroholgi.de 5kg counterweight for Losmandy G11
- astroholgi.de quick release screws for Losmandy G11
- ICS case for Takahashi FSQ-85
This customized case for the Takahashi FSQ-85 is made in Germany by ICS. The waiting time paid off.
The german Baader Clicklock system on the Baader diagonal has a compression ring inside providing a fine connection to the eyepiece.
Sure, this telescope is overmounted on the american Losmandy G11. Anyway, this is a sturdy setup also suitable for photographic use.
The quality of the ERF filter mount is exceptional. Its creator Astroholgi accepts orders from all EU countries. The Baader ERF-90mm (Energy Rejection Filter) protects the telescope as it prevents heat development in the tube.
Astroholgi's power supply consists of three 12 V gell cells connected in parallel. Its better suited for traveling than an old-fashioned, heavy car battery. Astroholgi's cable hub makes the setup looking tidy and clean.
AFAIK, refractors up to 80mm aperture do not need any ERF filter for Ha observing with the Daystar Chromosphere eyepiece. Up to 120mm aperture only an UV/IR filter in the diagonal should be sufficient. From 120mm and up, both an ERF filter and an UV/IR filter are mandatory.
There are two versions of the Daystar Quark: (a) Prominence and (b) Chromosphere. He chose the second one in order to be able to see details in the Sun disc. Anyway, I can confirm that, the (b) Daystar Chromosphere version delivered excellent views of both the protuberances and the Sun disc. I have successfully tested that on his FSQ-85 and my Televue 76 apo. I will publish a small review of it later in this blog.
The "Daystar Quark Chromosphere" simply converts your refractor to a Hα telescope. The Daystar device has a 4.3x telecentric inside. This barlow-like amplification device produces an orthographic view of the subject. Perfection or not, the focal length of the telescope is multiplied by 4.3x. That means, the FSQ-85 now works at f/22.8 and 1935mm focal length with the Daystar. You may now think, it is still a bargain.
However, there is no such thing like a free lunch and you need an excellent, fat eyepiece to get the best out of such a configuration. You might want to observe at low magnification and enjoy the larger field of view. Takahashi, Televue, or Pentax provide suitable eyepieces in the 15...40mm range. Such eyepieces are heavy and you'll probably pay 1000€ per kilo to buy one.
Furthermore, if you want to use 2" eyepieces on the Quark, you need Astroholgi's 2" adapter (see image ) dealing with the issue that the ethalon element in the Quark is a bit smaller than Astroholgi's 2" adapter and it does not fully illuminates it.
The Daystar Quark Chromosphere we used for this review has proven to be an impressive piece of engineering at an affordable price. But IMHO although its innovative concept tries to open new ways towards bargain Hα gazing, you should consider the total system costs. You might want to combine this red jewel with fine optics to get the best out of it.
Demanding Hα work was never a cheap affair.