Baader SunDancer II Moving the blocking filter from the TZ-3S of the SunDancer II H-alpha-Filter into the TZ-4S [EN]
Telecentric System TZ-4S
Moving the blocking filter from the TZ-3S
of the SunDancer II H-alpha-Filter
into the TZ-4S
In the optical construction of the SunDancer II H-alpha lter, the front-mounted, hardsputtered and highly age-resistant ½" diameter block lter in the TZ-3S represents a
considerable value. For this reason, this important lter must be installed each time the
optional TZ-4S is used instead of the pre-installed TZ-3S. When you purchase the TZ-4S,
you will also nd a 3D-printed small tool together with the product, which is used to loosen the lter ring in the TZ-3S of the SunDancer II and to then be able to secure the 2 nm
block lter in the corresponding place in the TZ-4S in the same way.
Please note that the 2 nm block lter is mandatory for operating the SunDancer II
H-alpha lter with both the TZ-3S and the TZ-4S. If you work without this important
protective lter, you would literally "fry" the large etalon (a crystal) as well as all polarizers
in the SunDancer H-alpha lter. The inevitable total repair would not be covered by any
warranty.
– DE ver. 07/2023 –
BAADER PLANETARIUM
Zur Sternwarte 4 • D - 8 2 2 9 1 M a m m e n d o r f • T e l . + 4 9 ( 0 ) 8 1 4 5 / 8 0 8 9 - 0 • F a x + 4 9 ( 0 ) 8 1 4 5 / 8 0 8 9 - 1 0 5
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To use the TZ-4S with the Baader SunDancer II H-alpha lter # 1363056, the 2 nm blo-
cking lter from the original TZ-3S must be moved to the TZ-4S. To do this, proceed
as follows:
1. Separate the telecentric system (TZ-3S) from the upper housing which contains the
H-alpha etalon (recognisable by the micrometer screw on the side) by unscrewing
the T-2 threaded connection as shown in the picture. Place this upper part of the
unit in such a way that no dust can get into the housing from below.
Make sure that the T-2-reducer ring is inside of the H-alpha-Filter and not on the telecentric.
Please note: Once you have unscrewed the TZ-3S telecentric, you should then see
a T-2 male thread (with 42 mm diameter) on top of it. In rare cases, however, it may
happen that the T-2 adapter ring loosens from the lower end of the upper housing,
where it is just below of the tilting device of the actual H-alpha lter. In this case,
simply screw it back into the H-alpha lter so that you can see the two holes for an
adjustable pin type face wrench.
2. Unscrew the ring that holds the lter in the 1¼" nose piece of the TZ-3S, likewise
the ring in the TZ-4S. To do so, place the small tool
from above onto the ring, so that it ts into
the kerfs of the ring, but does not scratch the
blicking lter (as shown in picture 2). This way,
you can unscrew the rings from both telecentric systems.
3. Remove the two rings
lter 2, and place them on a soft surface (like
paper or a soft Kleenex tissue).
4. Now put the blocking lter into the recess in
the TZ-4S. It doesn't matter which side is up.
If it falls at an angle into the recess, poke it
gently with a cotton bud or a toothpick – do
not use force; if it gets stuck, a conchoidal
fracture may occur.
Img. 1: Unscrew the TZ-3S from the SunDancer II H-alpha-filter.
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that comes with the TZ-4S
1
and the blocking
Image 2: Remove the ring by placing the
3 from above on the ring. This
small tool
way, it can't touch the filter itself.
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Manual: SunDancer TZ-4S
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Img 3: The TZ-3S (left), in front of it holding ring
and blocking filter. To the right the TZ-4S with
holding ring and the tool for loosening the holding
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The kerfs of the holding ring must be visible. Do
not overtighten it.
ring.
5. Place the holding ring in such a way on
top of the blocking lter that the small
kerfs are visible (c.f. image 4), and tighten it hand-tight with the small tool 3.
Grip it at its smaller shaft to avoid too
much pressure.
6. Finally screw the TZ-4S onto the lter
unit of the SunDancer II, and put the
dust caps on the TZ-3S.
SunDancer II H-alpha-filter with TZ-4S and
blocking filter, besides the original TZ-3S, now
without blocking filter.
Before each use of the SunDancer II H-alpha lter, always make sure
that you are indeed using the telecentric with the 2 nm block lter.
Only the SunDancer II H-alpha-lter # 1363056 can be used on
telescopes with up to 80 mm aperture without an additional D-ERF
front lter.
With all other SolarSpectrum lters, a larger block lter is already built directly
into the H-alpha Etalon lter housing. Therefore, for these SolarSpectrum lters,
you always need a D-ERF lter in front of the telescope, but you can then work
without the separate 2 nm block lter of the TZ-3S if you want to operate such a
SolarSpectrum lter with a TZ-3S or TZ-4S.
© 2023 Baader Planetarium GmbH
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www.baader-planetarium.com
© 2023 Baader Planetarium GmbH. All Rights reserved. Products or instructions may change without notice or obligation. Images and illustrations may differ from the original products. We reserve the right of errors. Reproduction
of this instruction manual, complete or in parts, only with written permission by
BAADER PLANETARIUM
Zur Sternwarte 4 • D - 8 2 2 9 1 M a m m e n d o r f • T e l . + 4 9 ( 0 ) 8 1 4 5 / 8 0 8 9 - 0 • F a x + 4 9 ( 0 ) 8 1 4 5 / 8 0 8 9 - 1 0 5
www.baader-planetarium.com • kontakt@baader-planetarium.de • www.celestron.de
G
M
B
H
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Manual: SunDancer TZ-4S
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