No hay artículos en el carro
No hay artículos en el carroAlineación Polar retículo*tanto del norte y Sur hemispheres ocular ajustes de enfoque*lograr un enfoque nítido en retículo
Brian
Comentado en los Estados Unidos el 4 de agosto de 2019
The instructions for aligning this were terrible. I ended up looking on YouTube and making very, very tiny adjustments on the allen screws. Alignment was a pain. Once you get through with this, the scope works as it should.
Jeff
Comentado en los Estados Unidos el 22 de junio de 2015
It took a good bit of work to figure it out, but once I did, I've had good results. Hint: if you can't get the scope rotated so Cassiopeia matches the pattern in the finder, then turn it exactly opposite Cassiopeia's orientation, and put Polaris opposite the little circle where you'd normally put it. Works with CG-4 mount.
Rick Brindley
Comentado en los Estados Unidos el 7 de febrero de 2015
Good quality for the right price. Focus is crisp and etching is easy to see with the help of a dim light. Once installed it aligns to NCP easily and in less than a minute or two. The instructions over simplify the installation by stating to tighten it until it stops - wrong - unless dumb luck is on your side. With the OTA removed, CW shaft in and weights removed, set your latitude to an angle that permits free rotation in RA. Lock your mount so the CW shaft is level vertically, i.e., pointing toward the meridian. Now, screw it in until it stops and check to make sure the cross etching looks like a + and the words are right side up. If this isn't how it appears then tighten or loosen accordingly. Fine tuning the axial alignment is a challenge so take your time. One hundred percent trouble free once installed.
JLandy
Comentado en los Estados Unidos el 9 de julio de 2014
Instructions could be a bit more clear - the picture example of centering on a distant object took me a while to realize it was a smoke stack, not some celestial object; everything else was pretty straight forward. I don't understand the hate on the poor positioning you have to get into to look through it - the mount isn't all that tall, you should expect to have to spend a little bit of time sitting on the ground to see through it. The optics are clear, very easy to focus- it would be nice if it were illuminated, but can't complain given the price. This upgrade doubled the effective unguided exposure time on my mount. Very happy overall. Would recommend.
starjacker
Comentado en los Estados Unidos el 23 de abril de 2014
This addition to the Celestron CG-4 mount does the job but is not easy to install or use. I hope you will benefit from my experience. First of all the instructions for mounting are very poor. The instructions are not clear on how to remove the original polar scope holder. You must get a good grip on the end where the adjustment screws stick out and unscrew it counterclockwise. This may be difficult if it is on too tight. Be sure to use the original collar with the degree marks. The one that comes with the polar scope does not have any degree scale. Insert the polar scope and screw until it stops.The instructions for aligning the scope to the RA axis are ok but the process is difficult and takes much fiddling to get it right, but once done you probably will never have to do it again. Now the fun part. They don't tell you that you have to turn yourself into a pretzel to view through the scope once installed. This really needs a right angle eyepiece badly. The installed scope is in the worst possible position to view through but I found a not inexpensive solution. I use the right angle viewfinder attachment that I use on my Pentax DSLR to view through the eyepiece of the polar scope. This makes what is otherwise almost impossible, doable. One of these runs about 20 bucks at mostcamera suppliers. The other fun part I had to figure out was seeing the non-illuminated markings inside the scope in the dark. This features a center circle where Polaris is aligned on and the Big Dipper that you align to by rotating the RA axis. I solved this mystery by using a small diode light in front of and just to the side of the polar scope's objective. This will allow you to see the markings and the stars. So, if you are willing to spend to get a right angle camera viewer, and rig a small light in the front of the scope, this might work for you too. Otherwise, I could not really recommend this without the mods.
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