Feature
●An object that is accurately centred in the eyepiece will be simultaneously centred in the cameras field of view. You no longer have to worry about whether the object is correctly positioned on the chip - you know it will be.
●For precise focusing: In astrophotography, if you want to take successful astronomy photographs, accurate focusing is only one half of the story. The Alstar flip mirror makes it very simple to find both the exact focus point and also the correct positioning for your astronomy photographs. This small black box has a moveable flip mirror which shunts the light path 90°upwards or, alternatively, lets it pass through unhindered.
●Always sharp: If you tilt the mirror to the 45° position, the object will then appear in the eyepiece and you will be able to precisely focus it as usual. The helical focuser on the flip mirror lets you make the eyepiece and camera exactly parfocal with each other. This means that both elements will be in focus at the same time.
●Connectability: The Alstar flip mirror has a 1.25" connector which will fit onto any standard telescope. The helical focuser will accept any standard 1.25" eyepiece. There is a T-2 thread provided on the camera side - the standard fitting for all cameras.
●An advantage with all cameras: No finder is provided with popular webcams or astronomical CCD cameras for helping position the object on the chip. Only by taking test exposures is it possible to achieve both sharp focus and the correct object position. The flip mirror is a big help here as the object has already been centred and focused remotely on the chip via the eyepiece.
Description
In astrophotography, if you want to take successful astronomy photographs, accurate focusing is only one half of the story. The Alstar flip mirror makes it very simple to find both the exact focus point and also the correct positioning for your astronomy photographs.
Adjusting the Flip Mirror Stop Angle
- Locate the socket head set screw on the bottom of the flip mirror body.
- If the subject is above the center of the field of view (when facing therear of the flip mirror), turn the set screw clockwise. lf the subject is belowthe center of the field of view, turn the set screw counter-clockwise.
Adjusting the Lever Tension
Keep the flip mirror lever in the “up" position to let the telescope focus on the camera. Flip the mirror to the “down" position to let the telescope focus on the eyepiece. With the flip mirror lever in the “up" position, focus your CCD camera using your telescopes focuser.
Flip Mirror Lever
There has a moveable flip mirror which shunts the light path 90°upwards or, alternatively, lets it pass through unhindered. With the flip mirror lever in the “up” position, focus your CCD camera using your telescope’s focuser. Then, flip the mirror to the “down” position to switch the light path to your eyepiece. Focus the eyepiece using the helical focus mechanism, making sure not to disrupt the telescope’s focuser.
Connection with the Telescopes
- Using the 1.25" nosepiece
- Using T-threads
Connection with Cameras
- For CCD cameras: Most commercial CCD cameras have accessible T-threads.
- For other cameras: Just add a T-ring to the original installation.
Connection with Eyepieces
- The Imaging Flip Mirror should reach focus with nearly all 1.25" eyepieces. (1.25" eyepiece adapter is indluded)
Cleaning and Storage
For example, there is only a little duston the lens. You can easily remove the dust with compressed air or blower bulb. If the lens is accidentally stained with finger prints or unclear during use, you need to remove the eyepiece frame from the overturned lens body first. Then dip the q-shaped head cleaning cotton swab into isopro-pyl alcohol or lens cleaning solution to avoid the accumulation of dust on the lens, you need to putthe dust cover back after use and put it back in the box.
