We offer the complete filter program by Astronomik, and additionally
some Baader nebula filters.
We have collected some
general information on nebula filters: General Information
Some images taken with and
without filter may help you in your decision of choosing the right filter for
your purpose. For that please click on the following link: filter comparison
And do not miss to look up
our table for deep sky objects for nebula filters: Table (opens new window)
Visual filters:
The visual filters are made for emission and planetary nebula with dominant
emission lines of OIII, H-beta and H-alpha. The pass bandwidth is varying, but
all of them block the typical lines of urban illumination. Therefore contrast
is enhanced especially in areas with high light pollution. The filters can be
used photographically also, but you have to take care for the color
information.
These filters are normally available on stock.
Art.-No. |
Description |
Bandwidth of pass |
Purpose |
Price () |
AS-CLS-1.25 |
CLS-filter (City Light Suppression), 1,25 inch |
Between 450 and 540nm and from 650nm |
The pass bandwidth is the region of the night adapted eyes most
sensitive wavelength region. This contains the OII and H-beta lines. Also the
far red and near infrared (H-alpha) can pass the filter. Typical light pollution sources are filtered out. The pass bandwidth
is really broad, so this filter is recommended for all telescopes to enhance
contrast for all deep-sky objects. |
69,00 |
AS-CLS-2 |
CLS-filter, 2 inch |
Between 450 and 540nm and from 650nm |
as AS-CLS-1.25, but fit with 2-inch eyepieces. |
159,00 |
BA-UHC-1.25 |
UHC-filter, 1,25 inch |
about 60nm between 450 and 510nm and from 630nm |
The bandwidth of this filter is two thirds of the CLS-filter. However,
OIII- and Hί-lines as well as the far red (H alpha) can pass it. Typical
light pollution sources are filtered out effectively. The bandwidth is broad
enough to recommend this filter for contrast enhancement for small telescopes
also. Best used for planetary and galactic nebula. For galaxies or star
clusters the effect is much less. |
65,00 |
BA-UHC-2 |
UHC-filter, 2 inch |
about 60nm between 450 and 510nm and from 630nm |
as BA-UHC-1.25, but fit with 2-inch eyepieces. |
112,00 |
AS-UHC-E-1.25 |
UHC-filter, 1,25 inch |
ca. 45nm bandwidth between 470-515nm |
As Baader UHC, but somewhat smaller bandpass.The economy version of
the Astronomik UHC-filter. |
65,00 |
AS-UHC-E-2 |
UHC-filter, 2 inch |
ca. 45nm bandwidth between 470-515nm |
wie AS-UHC-E-1.25, aber
passend fόr 2-Zoll-Okulare |
125,00 |
AS-UHC-1.25 |
UHC-filter, 1,25 inch |
35nm bandwidth between 475 and 510nm, and about 25nm bandwidth around
655nm |
The bandwidth of this filter is just one third of the CLS-filter. However,
OIII- and Hί-lines as well as the far red (H alpha) can pass it. Typical
light pollution sources are filtered out effectively. The bandwidth is broad
enough to recommend this filter for contrast enhancement for small telescopes
also. Best used for planetary and galactic nebula. |
99,00 |
AS-UHC-2 |
UHC-filter, 2 inch |
35nm bandwidth between 475 and 510nm, and about 25nm bandwidth around
655nm |
as AS-UHC-1.25, but fit with 2-inch eyepieces. |
229,00 |
AS-OIII-1.25 |
OIII-filter, 1,25 inch |
about 25nm bandwidth around 498nm |
Filter with a small pass bandwidth around 500nm (both OIII-lines).
useful to achieve highest contrast within OIII emission nebula (plantary
nebula, supernova remains). The filter is really dark as no other wavelength
can pass. |
99,00 |
AS-OIII-2 |
OIII-Filter, 2 inch |
about 25nm bandwidth around 498nm |
as AS-OIII-1.25, but fit with 2-inch eyepieces. |
229,00 |
BA-OIII-1.25-CCD New!
|
OIII-filter, 1,25 inch |
About 10nm bandwidth around 498nm, no transmission up to 1150nm |
A filter for visual and photographic use. Blocking up to 1150nm
is important for CCD-photography , as no additional IR-blockfilter is
necessary. First choice for visual use at low magnifications also, as the
bandwidth is quite small. |
95,00 |
BA-OIII-2-CCD New!
|
OIII-Filter, 2 inch |
Etwa 10nm Bandbreite um
498nm, sperrt bis 1150nm |
wie BA-OIII-1.25-CCD,
aber passend fόr 2-Zoll-Okulare |
145,00 |
BA-OIII-1.25 |
OIII-Filter, 1,25 inch |
about 6 to 8nm bandwidth around 498nm |
as Astronomik OIII, but remarkably smaller bandwidth |
69,00 |
BA-OIII-2 |
OIII-Filter, 2 inch |
about 6 to 8nm bandwidth around 498nm |
as BA-OIII-1.25, but fit with 2-inch eyepieces |
128,00 |
AS-HB-1.25 |
H-beta filter, 1,25 inch |
about 15nm bandwidth around 485nm |
Filter with small pass region around 485nm (H-beta-Linie). Best
contrast for hydrogen nebula. The filter is really dark as no other
wavelength can pass. |
99,00 |
AS-HB-2 |
H-beta Filter, 2 inch |
about 15nm bandwidth around 485nm |
as AS-HB-1.25, but fit with 2-inch eyepieces |
229,00 |
Photographic filters:
H-alpha filter are usually on stock, for all other filters please
request delivery time.
Attention: Do not use the H-alpha filters for sun observations! Do not
mix up these specialty filters with the photographic Astronomik filters!
Art.-No. |
Description |
Bandwidth of pass |
Purpose |
Price () |
AS-HA-1.25 |
H-alpha-filter, 1,25 inch |
About 13nm bandwidth around 655nm |
Photographic detection of hydrogen nebula with very high light
pollution suppression |
119,00 |
AS-HA-2 |
H-alpha-filter, 2 inch |
About 13nm bandwidth around 655nm |
as AS-HA-1.25, but fit with 2-inch eyepieces |
279,00 |
AS-HA-6-1.25 |
H-alpha-filter, 1,25 inch |
About 6nm bandwidth around 655nm |
Photographic detection of very faint hydrogen nebula with maximum
possible light pollution suppression |
189,00 |
AS-HA-6-2 |
H-alpha-filter, 2 inch |
About 6nm bandwidth around 655nm |
as AS-HA-6-1.25, but fit with 2-inch eyepieces |
429,00 |
AS-RE-1.25 |
Profi Red Type 2 1,25 inch |
red spectral region |
To build up colored photos from three grey images taken in red, green
and blue spectral range. |
59,00 |
AS-RE-2 |
Profi Red Type 2 2 inch |
red spectral region |
as AS-RE-1.25, but fit with 2-inch eyepieces |
125,00 |
AS-GR-1.25 |
Profi Green Type 2 1,25 inch |
green spectral region |
To build up colored photos from three grey images taken in red, green
and blue spectral range. |
59,00 |
AS-GR-2 |
Profi Green Type 2 2 inch |
green spectral region |
as AS-GR-1.25, but fit with 2-inch eyepieces |
125,00 |
AS-BL-1.25 |
Profi Blue Type 2 1,25 inch |
blue spectral region |
To build up colored photos from three grey images taken in red, green
and blue spectral range. |
59,00 |
AS-BL-2 |
Profi Blue Type 2 2 inch |
blue spectral region |
as AS-BL-1.25, but fit with 2-inch eyepieces |
125,00 |
AS-L-1.25 |
UV-IR-Blockfilter |
complete visible spectrum |
Used as UV and IR blocking filter to take the luminescence channel in
RGB images |
49,00 |
AS-L-2 |
UV-IR-Blockfilter |
complete visible spectrum |
as AS-L-1.25, but fit with 2-inch eyepieces |
99,00 |
AS-L-RGB-1.25 |
Set AS-RE, AS-GR, AS-BL, AS-L in 1,25 |
|
|
219,00 |
AS-L-RGB-2 |
Set AS-RE, AS-GR, AS-BL, AS-L in 2 |
|
|
399,00 |
AS-IR-1.25 |
Infrarot-Blockfilter, 1,25 |
blocks infrared |
Used in CCD-photography to block the infrared region of the spectrum,
mostly to enhance sharpness |
39,00 |
AS-IR-2 |
Infrarot-Blockfilter, 2 |
blocks infrared |
as AS-IR-1.25, but fit with 2-inch eyepieces |
89,00 |
AS-OIII-CCD-1.25 |
OIII filter for CCD, 1,25 inch |
about 13nm bandwidth around 498nm |
In photographic applications to get a colored image from OIII - SII -
H-alpha exposures (can be used instead of RGB). |
119,00 |
AS-OIII-CCD-2 |
OIII filter for CCD 2 inch |
about 13nm bandwidth around 498nm |
as AS-OIII-CCD-1.25, but fit with 2-inch eyepieces |
279,00 |
AS-SII-1.25 |
SII filter for CCD 1,25 inch |
about 13nm bandwidth around 672nm |
In photographic applications to get a colored image from OIII - SII -
H-alpha exposures (can be used instead of RGB). |
119,00 |
AS-SII-2 |
SII filter for CCD 2 inch |
about 13nm bandwidth around 672nm |
as AS-SII-1.25, but fit with 2-inch eyepieces |
279,00 |
AS-MC-1.25 |
Clear glass Multicoated, 1,25 |
|
To keep the focus when using no filter. |
35,00 |
AS-MC-2 |
Clear glass Multicoated, 2 |
|
To keep the focus when using no filter. |
69,00 |