Projection setups
Projection-Setup with two ATIK-Filterwheels (various Planets, Moon and Sun)
The DMK21 or DMK41 CCD camera is linked via a variable lenght adapter unit to the two ATIK filterwheels and to the projection eyepiece FFC. The magnification is adjustable by distance variations from the CCD-Chip to the FFC lens.
Two filterwheels are connected in a sandwich format in order to allow almost each combination of filters for Planet, Moon, Sun photography. They are connected via T2 quick release adapters and can be separated. The integrated flipmirror (Baader, germany) enables, in combination with the 12.5mm Microguide (Baader, germany) eyepiece, the search and the focussing of the according objects. The integral variable lenght adapter is a highly precise and a rock solid unit (swiss quality) performing without any shifts. Due to the slidingdistance of 0mm to max. 50mm it can be combined with 40mm extensiontubes to any stepless projection distance. The results are different projection factors as shown in the drawing with up to (6-9) x by inserting 0-4 times a 40mm extensiontube at the junction of the flipmirror to the variable projection adapter. The adapter itself is flanked by two quick release adapters (Baader Planetarium) and may be taken out for lower FFC projection powers. The flipmirror plus camera, linked directly to the 'two ATIK-Filterwheel sandwhich', will reduce the projection factor from (6-9) x to about (4-5) x. For the detailed filterloadings, according to the object in the sky, please read the drawing and the section filters and filterwheels.
ATIK-1
1 No-filter
2 IR-pass (742)
3 S-solar (Baader SolarContinuum)
4 CA-calc (Baader K-Line Calcium)
5 D-black (darkframe)
ATIK-2
1 L-UV/IR cut
2 R-red
3 G-green
4 B-blue
5 No-filter
The projektion-setup as used for long focal lenghts.
The projektion-setup as used for shorter focal lenghts.
For Moon recordimg the adapters and FFC in combination to the DMK41.
This innovative Seletek controll box Seletek facillitates the independent triggering of two motorized ATIK filterwheels with the Seletek software via one USB port. Both filterwheels are controlled with MaximDL5.07 Diffraction Limited and the two different Seletek ASCOM drivers, which have to be selected in the Exposure and Guide Tabs in the MaximDL Camera Control window. The DMK Camera in the projection unit is driven by the Software IC Capture.AS 2.0 Imaginging Source.
Yes it is russian optics... made by LOMO and in peace...
The wiring on this drawing is shown from the back to the adapter plugs. The Main and the Exp ports are individually connected to the two ATIK-filterwheels. For more details of the soldering and commercially available adapters I refer to the homepage of Seletek.
Projection unit Venus (UV light)
In order to observe the detailed structures of the clouds on the planet the UV-light emitted from the venus is selected by a Schüler UV-pass filter. For the projection of this limited light, lenses with special coatings and glass sortes, which may block themselfs the UV light, are less recommended. Therefore I choose a rather cheep and simple, but optically proofen University Optics 25mm eyepiece for the projection task, as it was very nicely shown by Silvia Kowollik. It is here placed in the selfmade OP-projection sliding adapter.
The CCD cameras DMK21 or DMK41 together with the projection core unit is mounted directly to a 2 zoll adapter. The integrated flipmirror (Baader, germany) enables, in combination with the 12.5mm Microguide (Baader, germany) eyepiece, the search and the focussing of the venus. The magnification is adjustable by distance variations from the CCD-Chip to the UO 25mm eyepiece lenses, leading to the fä (equivalence focal distance) of interest. The results are different focal lenghts as indicated in the drawing.
UO 25mm eyepiece mounted to UV-pass (Schüler) filter
The projektion-setup for the venus photography. The UO-25mm eyepiece with the UV-pass filter (Schüler) is here shown separated from the projection unit.
Projection unit Deepsky:
The SBIG ST10XME with the filterwheel FR-3 (8 positions/ L-R-G-B-Halpha-SII-OIII-empty) is generally used for deepsky photography. It may be mounted with various adapters to the projection eyepiece FFC in order to achive higher magnifications. The magnification is stepless adjustable by distance variations from the CCD-Chip to the FFC lens. The results are different barlowfactors as shown in the drawing.
Setup 1: 4.3-5.3 barlowfactor
Setup 2: 2.7-3.1 barlowfactor
Setup 3: 5.3-9.4 barowfactor
