Question about Celestron NexStar 4 SE Telescope

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Cannot see light through the eye piece--do i have to align first

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NO, you should be able to see through it without alignment. Put the eyepiece with the largest number written on it into the DIAGONAL put the diagonal into the rear of the scope and practice focusing on a distant object during the day time.

Posted on Nov 10, 2010

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My remote is not working even with a new battery. Door won't close unless I hold the garage button down until door is closed all the way.


It sounds like you may have a problem with the eyes at the bottom of the door jam. These two eyes must be aligned so the light from one is picked up by the other one. Sometimes they get bumped by accident and need to be re-aligned. Check at the top of the eye where it is touching the metal bracket. If it has been moved the plastic pin on top of the light sensor will be out of the hole in the metal bracket. carefully move the plastic light body until it snaps into the hole on the metal bracket. Then try the remote. If that doesn't work, check both boxes on each side of the garage jam. one should send out a light beam and the other one should receive it. Try this. In the dark put a piece of paper in front of the unit that is NOT sending out light the beam. Line up the light beam with the receiver hole on the side of the unit. move it around until it shines into the eye on the side of the other unit. Try the opener. See if solves your problem. If I get to a point like this where nothing I try works I get out a tool that always fixes anything, my checkbook. Good luck. :)

Apr 22, 2016 | Sears Genie Garage Door Gpwk12 Wireless...

1 Answer

I can't see through the eye piece! The finderscope has been adjusted to view the moon but when I looked through the eye piece I could only see black :( its a tasco galaxsee 45-076280


Align the finder to the main scope during the day before using it at night. Use the lowest power (biggest number) eyepiece first.

Mar 10, 2014 | Optics

2 Answers

I have a newtonian telescope 76mm with SR4, H12.5 and H20. I have aligned the crosses up and can see through the viewfinder but nothing through the eye piece. Ive placed all the other lenses into the eye...


YOU MUST align the small finder scope with the main tube.

Point the scope at a distant object like the top of a telephone pole. GET the top in the center of the eyepiece in the main scope.

Then without moving the scope-- adjust the cross-hairs in the small finder scope so they line up on the same object.

Feb 09, 2011 | Bushnell Deep Space 78-9003 (525 x 76mm)...

1 Answer

I have a pair of Plastimo military binoculars which have been fine up to now, but suddenly, despite being able to focus using the two eye piece controls, I cannot get anything other than a double image, no...


Hello - I never had Plastimo before but I have had a similar problem with double vision on a very similar looking pair of binoculars.
The eye piece movement just re-aligns eye focus differences , a double image usually means one of the lenses has moved inside the main tube. (usually from a knock/fall etc)
Can you rotate either one of the tubes ? On my pair I had to rotate anti-clockwide and found a prism inside that had slipped after a fall -
Close one eye and try to gauge which side is the best side -- Ray

Feb 05, 2011 | Plastimo Optics

1 Answer

Hi All, I have brought a Black TwinStar GIANT 6" MIRROR W TRIPOD -Reflector Telescope EQ Mount. I have successfully able to assemble every thing except the eye piece settings. could any one please help...


The eyepiece with the LARGEST number written on it is your lowest magnification.

Put the eyepiece into the focuser and practice focusing on a distant object during the day time. The image will be upside down. NOTHING is wrong. All astronomical telescopes show upside down images.

Join this free astronomy forum:
http://www.astronomyforum.net/

You will also need to learn how to polar align the EQ mount. Read my tips on my profile page.

Aug 20, 2010 | Optics

2 Answers

Toner light


I taped a very small white piece of paper over the sensor eyes on either side of the cavity where the cartridge fit. I read that coloring in the actual "windows" that are on either side of cartridge also may help so I did that too.

So open the front, remove cartridge, look on the cartridge for a small circle and color them with black marker (or use electrical tape), look where they would have aligned inside the cavity, tape a small piece of white paper over those sensor eyes.

I just did this and it stopped the blinking. Don't know how long but based on my reading, one of these was the trick.

Jun 17, 2009 | Brother HL 5140 Laser Printer

1 Answer

We have 2 sensors. 1 has a green light and the other has no light


Your safety eyes are out of ajustment. Make sure that the eyes are pointing directly at each other. A light will come on on each eye when they are properly aligned. The only other thing that could be wrong is that one of the safety eyes could be bad, and the only thing you can do is replace the eyes. 99% of the time the problem is an alignment issue. By holding down the wall button, you are overriding the safety eyes.

Mar 05, 2009 | Sears Craftsman LiftMaster Chamberlain...

5 Answers

Programing limits on a Grifco MK3 Garage door Operator


It has the "Protector System" (safety sensors). chec the sensor indicator light on the receivinng eye the green light had a slight flicker.cleaned both the sending eye and receiving eye lens of dust and cob webs, then realigned the receiving sensor for a steady green indicator light. then check the door function it now works fine.over time, temperature, and viberation the sensors become dirty and get out of alignment, as no one had tampered with the sensor alignment prior to this. Hope this works for you.

Nov 21, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Red dot finderscope alignment problem


point the telescope at some thing during the day and adjust the finder scope and at night point at a star look through the eye piece and center the object in the eye piece then adjust the finder scope.

Jun 04, 2008 | Bushnell NorthStar 78-8831 (525 x 76mm)...

1 Answer

Bundled Eye Piece Cover


The Eye Piece Cover is the cover that attaches to the viewfinder. The eye piece cover prevents light from entering the viewfinder when shooting with your eye away from the viewfinder.

Sep 04, 2005 | Olympus EVOLT E-300 Digital Camera

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