The Slimline OAG features The 10 x 8mm prism fully illuminates a Lodestar or EX guider CCD and the pick-off axis may be adjusted to optimise the guide image quality.
Adds 17mm to the total back focus.
Total backfocus with SX Filter Wheel is 42mm
An optically-matched M48-fitting doublet field flattener for Skywatcher's Esprit 120 ED PRO triplet refractor.
The M48 fitting provides a large clear aperture to reduce halation and a precision thread ensures the triplet and doublet lens groups are precisely aligned on the optical axis perpendicular to the image.
When used with the field flattener the Esprit-120 ED PRO's imaging circle is 44mm.
Starlight Instruments 3" FeatherTouch R&P Focuser for Sky-Watcher Esprit 120/150 Super ED APO Refractors.
This top quality rack and pinion focuser from Starlight Instruments USA is a direct upgrade to the standard focuser supplied with the Sky-Watcher Esprit-120 and Esprit-150 Super Apo Triplet Refractors. Designed to meet all the requirements of the most demanding astrophotographer. Exactly tailored for the focal length of the Esprit-120/150.
MODEL FTF3035B-A (Custom adapted by Starlight Instruments):
Feather Touch® 3.0" Diameter Dual Speed Focuser, 3.5" Draw tube travel, Resistance Brake, Integral TFPE Coupled Rotational Collar, and 2.0" Diameter Compression Ring, Custom coupling adaptor for Esprit-120/150 OTA’s, 3” M65 End Cap for Esprit Field Flatteners
Draw Tube Travel: 3.5"/88.90mm
Payload Capacity: up to 7kg
Draw Tube Thread: M75x1 Female Thread
Thread on OTA Entry Side of Draw Tube: M109X1 Male Thread
Focuser weight: 1.8kg (excl. adaptors) pounds
Draw Tube Drive Mechanism: Rack/Pinion
Reduction Ratio: 10:1
Racked In from Mounting Face: 3.672"/93.27mm (excluding adaptor)
Racked Out from Mounting Face: 7.368"/187.15mm (excluding adaptor)
Alnitak Astrosystems' flagship product, the Flip-Flat, is a robotic lenscap and flat field illumination source for small to medium size refractors.
With hundreds of Flip-Flats already in the field being used by satisfied customers, we’re confident that our product continues to meet the needs of discriminating astro-imagers around the world.
The Flip-Flat employs advanced electroluminescent lamp panel technology to provide a uniform source of illumination for the production of high quality flat field frames necessary for serious astroimaging and photometric work. With the Flip-Flat, on-demand flat fields with uniformity errors less than 1% are now possible.
In addition to providing excellent flat fields, the Flip-Flat protects the objective lens of the telescope from dust that typically plagues remote installations where the user cannot manually replace the lenscap after an imaging session. The Flip-Flat is easily mounted to the front of any telescope tube (or rigid dewshield) with an OTA outside diameter between 4" (100mm) and 8-1/8" (206mm). The Flip-Flat is attached to the telescope OTA with industrial nylon zip straps and easily removable for transport and storage.
A simple Windows interface provides the ability to open and close the Flip-Flat and turn on the light source. The intensity of the light can be adjusted to one of 255 levels.
Lamp Diffuser Diameter: 7.7" (195mm)
Lamp Illumination Diameter: 6.7" (170mm)
Control Box Dimensions: 2.25" x 3.15" x 4.2" (57 x 80 x 106mm)
Weight: 1 lb. 6 oz. (0.6 kg)
Lamp Pivot Arm: 6.1" (155mm) length
Range of Pivot Arm: 95-degrees
Power requirements: 5VDC provided by USB interface
Alnitak Software Compatiblity: Windows XP, Vista, Windows 7 and 8.
Command Line Program: AACmd.exe
Visit the Alnitak SOftware downloads page for the latest Quick Start Guide, Alnitak Installation Manual and Software Reference Guide, and Serial Command List.
#19050 - Alnitak Flip-Flat, OTA size: 4" to 6"
The #19050 Flip-Flat package includes the lamp controller, motor arm, OTA bracket to center the lamp over OTA dew shields measuring 4" to 6" in diameter, a pair of industrial zip straps, USB cable, and software. Fully illuminated lamp is 6.7" (170mm) in diameter.
#19051 - Alnitak Flip-Flat, OTA size: 6" to 7-5/8"
The #19051 Flip-Flat package includes the controller, motor arm, OTA bracket to center the lamp over OTA dew shields measuring 6" to 7-5/8" in diameter, a pair of industrial zip straps, USB cable, and software. Fully illuminated lamp is 6.7" (170mm) in diameter.
For the imager who doesn't need the robotic capability of the Flip-Flat, the Flat-Man is now available. The Flat-Man uses the same technology as the Flip-Flat, but is manually placed on the OTA for flat field imaging. The only power you need is a USB cable, and our Windows XP software will light and control the brightness of the Flat-Man. Simply rotate your telescope until the dewshield is pointed straight up and place the Flat-Man centered on your scope.
The Flat-Man is an affordable means to achieve excellent flat fields. For dewshield OD's up to 81/8 inches.
#19056 - Alnitak Flat-Man, up to 8-1/8" - Price: $349
Add to Cart
The #19056 Flat-Man package includes an additional expansion ring allowing use with OTA's having dew shields up to 8-1/8" in diameter, USB cable, and software. Fully illuminated lamp is 6.7" (170mm) in diameter.
Alnitak Software and Technical Downloads:
The Alnitak Control Software can be downloaded from our downloads page and includes the AACmd command line program for use with ACP, CCD AutoPilot, Maxim D/L and other astronomy automation programs.
2m St-4 compatible Guide Cable
An optically-matched M48-fitting doublet field flattener for Skywatcher's Esprit 150 ED PRO triplet refractor.
When used with the field flattener the Esprit-150 ED PRO's imaging circle is 44mm.
When fitting a DSLR camera you need only a M48 Ring to suit your Canon or Nikon camera. No additional spacers are required.
The spacing for dedicated CCD imaging cameras is 96mm from mating surface.
The rear thread is M48. When using T-threaded accessories you will need a FLO M48-T adapter.
Altair 60mm Guide Scope with a 1.25" non-rotating Micro focuser, OTA, rings, stalk, and UNIFBR base.
Focal length is 225mm (F3.75) which is perfect for autoguiding.
The focuser has a 1.25" ID push-fit adapter with brass compression ring, allowing use of auto-guiding cameras or 1.25" eyepieces.
The indexed micro-focuser can be locked, enabling the eyepiece or camera to set at the correct focus-point.
Because the focuser does not rotate, the guide camera is easier to focus and maintain alignment on-target.
The rear of the focuser also includes a T2 thread to allow the addition of extensions.
The finder stalk is compatible with most finder scope brackets on the market, but also includes a universal finder bracket (product code UNIFBR), with a cross-slotted hole pattern to fit most telescopes.
To attach the finder scope to dovetail bars, simply remove the stalk by means of the two set screws.
The Pyxis 3-inch has a full 3 inches of clear aperture and is designed to hold large instrument packages without flexure or wobble. A 6-inch bronze worm gear and stainless worm rotate the center tube with a resolution of 0.01875 degree per step from the stepper motor. The operating software is very similar to the smaller Pyxis so that existing third party software is compatible. De-rotation of the field for long exposure images with alt-azimuth mounted telescope and rotation of the guide chip for SBIG camera to a suitable bright guide star are the two primary uses of this instrument. Power requirements and other operating conditions are similar to the 2-inch Pyxis model.
This model is large and heavy and is intended for larger telescopes on observatory caliber mountings. The 2.4-inch thickness warrants telescopes that can accommodate this increase in the back-focus distance. It uses the same telescope mounts and camera side adapters as the TCF-S3 - Optec's new 3-inch temperature compensating focuser. Any telescope mount or camera side adapter has to be ordered separately.
Cross-sectional view of the Pyxis 3-inch. Click here for a pdf version.
Like the 2-inch Pyxis model, the unit can only be controlled by a PC computer running the Optec PYXIS.exe control software or third party compatible software. Manual control is not possible. A flat wire serial cable is available for connection to a standard RS-232 interface COM port at 19.2K baud. Standard lengths and custom lengths up to 100 feet are possible. Cables and COM port adapters need to be ordered separately. A 15 VDC regulated power supply is included with a right angle 2.5 mm power jack. Stepping up to 15 volts DC provides about 20% more torque without sacrificing speed. Contact Optec to upgrade to the 15 VDC right angle power supply for your existing Pyxis 3-inch.
The Pyxis camera rotator was especially designed with the guiding chip of the SBIG ST-x CCD cameras in mind. Simply locate a suitable guide star, enter the position angle and let the Pyxis rotate the camera so that a bright guide star is centered on the tracking chip. For those with alt-azimuth mounts, the Pyxis can de-rotate the field while tracking an object. A simple Windows interface program is provided which provides both position angle rotation and de-rotation control modes. The control software is free and updates are also free.
Utilizing a precision sealed 50mm bearing, the Pyxis provides the rigidity and stability you have come to expect from Optec instruments. Weighing under 2 lbs the Pyxis can support and rotate the SBIG ST line of cameras without slipping. If the holding torque of 27 inch-pounds (3 Nm) is exceeded, the drive gear will slip but no damage to the Pyxis will occur. The running torque is 9 inch-pounds (about 1.0 Nm). This limit to the holding and running torque will also prevent damage to cables and instruments if a rotational stoppage does occur. The Pyxis can handle the SBIG AO-7 adaptive optic with camera. The clear aperture of the Pyxis is 1.65 inches and adds about 1.6 inches to the back-focus. For large instrument packages or systems that use the SBIG STL camera with large CCD, the new Pyxis 3-inch model is suggested.
Intelligent firmware will choose the best direction for each move to keep camera cables from binding. The built-in circuit board provides all the control needed - no external hand control box is required. Windows control software is provided with the Pyxis and software integrators will appreciate the simple command language allowing them to easily select a new position angle or activate the derotation control for alt-azimuth tracking.
The Pyxis was designed for use with the Optec TCF-S Focuser and IFW Filter Wheel. Fully compatible with the Optec NextGen MAXfield and NextGen WideField telecompressors the Pyxis can be used at 1X, 0.5X, and 0.33X using any SBIG camera. However, the NextGen telecompressors used with the Pyxis are not compatible with the SBIG cameras having an attached CFW-8/9/10 filter wheel. In this case the back-focus distance for the NextGEN reducer is exceeded.
New Firmware And Circuit Board Available
New firmware is available for the Pyxis 2-inch and 3-inch models. It was suggested that the unit have the ability to adjust the HOME or 0 position angle by software means instead of physically rotating the unit. Seeing the wisdom of this, the firmware has been modified to allow the user to set 0 PA within +/- 15 degrees of the default position. Cost is $25.00. New control software version 1.30 must be downloaded to make use of this new command. This firmware is only compatible with Rev. 1 circuit boards for the Pyxis 2-inch. Earlier models require a circuit board replacement.
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