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General Astronomy >> General Observing and Astronomy

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MikeBOKC
Post Laureate
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Reged: 05/10/10

Loc: Oklahoma City, OK
Re: What Finder Do You Use? new [Re: CelestronDaddy]
      #5659297 - 02/03/13 02:20 AM

9 x 50 RACI on the big scopes, red dot on the refractor.

Edited by MikeBOKC (02/03/13 02:21 AM)


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berobertsmd
super member


Reged: 09/28/09

Loc: Brandon, Mississippi
Re: What Finder Do You Use? new [Re: MikeBOKC]
      #5659837 - 02/03/13 11:53 AM

I use a Telrad with optional variable pulsar module. With the pulsar I'm able to see fainter objects. It was easy DIY install. Now can control brightness and rate of reticle image in the Telrad viewfinder. I also added the 2" riser which makes it much easier to see reticle, especially for objects higher above horizon.

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joelimite
Carpal Tunnel
*****

Reged: 09/01/08

Loc: Fayetteville, AR
Re: What Finder Do You Use? new [Re: berobertsmd]
      #5659964 - 02/03/13 01:08 PM

I use a 1x Rigel QuickFinder and a 9x50 RACI finder on my 12-inch Dob. It's the perfect combination for star-hopping. I use the QuickFinder to center on a bright star and then the RACI to hop to my target. On my other scopes, I typically just use a 1x finder of some form or another.

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roscoe
curmudgeon
*****

Reged: 02/04/09

Loc: NW Mass, inches from VT
Re: What Finder Do You Use? new [Re: CelestronDaddy]
      #5660501 - 02/03/13 06:10 PM

red dot, then RACI with a 12.5 ortho in it, making it a 17x50, then scope.

Russ


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FirstSight
Duke of Deneb
*****

Reged: 12/26/05

Loc: Raleigh, NC
Re: What Finder Do You Use? new [Re: roscoe]
      #5660923 - 02/03/13 11:42 PM

On my 12" reflector, I have both:
1) Telrad (which is a dew magnet) and
2) Stellarvue 60mm RACI finderscope with a 24mm Panoptic eyepiece. In darker skies, it provides a worthy panoramic view in its own right.

On my NP-101 refractor, I have a TV Starbeam red-dot finder. Nice range of brightness control options, but only a single, rather large round dot pattern. However, the brightness control can be set to make the dot effectively transparent, yet still bright enough to easily see.

On my Megrez 90 refractor, I have a nice red-dot finder with variable brightness control and several choices of target pattern.


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Peshmerga
member


Reged: 12/25/12

Re: What Finder Do You Use? [Re: JayinUT]
      #5661147 - 02/04/13 05:20 AM

9x50 RACI by Orion, came with XT8i.

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Sarkikos
Postmaster
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Reged: 12/18/07

Loc: Suburban Maryland, USA
Re: What Finder Do You Use? new [Re: JayinUT]
      #5661270 - 02/04/13 08:27 AM

On my 10" Dob for dark site trips:

- Telrad to sight on the nearest naked-eye star
- 15x70 RACI finder to star hop to object
- SkySafari Pro on Android to find the way


On telescopes at home when observing planets and the Moon:

- Straight-through 6x30 finder or Red-Dot finder or QuickFinder


On telescopes at home when observing double stars and bright DSO:

- 8x50 RACI or 6x30 RACI, together with a 1x finder, either a Red-Dot or QuickFinder
or
- 8x50 ES straight-through erect-image non-reversed finder


I never use a "finder eyepiece."

Mike


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Sarkikos
Postmaster
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Reged: 12/18/07

Loc: Suburban Maryland, USA
Re: What Finder Do You Use? new [Re: Special Ed]
      #5661283 - 02/04/13 08:37 AM

Special Ed,

Quote:

Of course, it should go without saying that one should always use a low power ep during the finding phase but there--I said it anyway.




I don't think a low power "finder eyepiece" is always necessary. I never use one. On my 10" Dob, I use a 15x70 finder for most star hopping. I have it closely aligned with the main telescope, so I can go straight from finder scope to moderate or high power eyepiece in the main scope. I don't need to put in a low power eyepiece first.

If there is an accurate fix on the location of the object, you don't really need to see the object itself in the finder.

Mike


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csrlice12
Postmaster
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Reged: 05/22/12

Loc: Denver, CO
Re: What Finder Do You Use? new [Re: Sarkikos]
      #5661292 - 02/04/13 08:45 AM

Mike is right. If you properly align your finder to the scope, you can use a medium or high power eyepiece and the object will be in the scopes FOV. I've done it with 7mm orthos in my dob and refractor. And, to be truthful, it doesn't take long to align a finderscope. A properly aligned finder can make the difference between a great night and a frustraiting one......

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tezster
scholastic sledgehammer
*****

Reged: 07/14/09

Loc: Missisauga, Canada
Re: What Finder Do You Use? new [Re: csrlice12]
      #5661312 - 02/04/13 09:00 AM

Just a Rigel QF on my dob, primarily to perform the two-star alignment for my wireless DSCs.

On my refractor, just a basic RDF.


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Sarkikos
Postmaster
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Reged: 12/18/07

Loc: Suburban Maryland, USA
Re: What Finder Do You Use? new [Re: csrlice12]
      #5661364 - 02/04/13 09:35 AM

Randy,

Quote:

If you properly align your finder to the scope, you can use a medium or high power eyepiece and the object will be in the scopes FOV. I've done it with 7mm orthos in my dob and refractor. And, to be truthful, it doesn't take long to align a finderscope. A properly aligned finder can make the difference between a great night and a frustraiting one......




I have the suspicion that many if not most observers don't take the time to align their finders accurately. I find that what helps immensely is to put a crosshair eyepiece in the focuser of the main telescope while I'm aligning the finder. Position Polaris behind the crosshairs of that eyepiece and then adjust the Telrad and your optical finder. This extra bit of effort will pay you back manyfold when star hopping to objects.

Mike


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Feidb
Pooh-Bah


Reged: 10/09/09

Loc: Nevada
Re: What Finder Do You Use? new [Re: Sarkikos]
      #5661393 - 02/04/13 09:51 AM

My finders are dead on when I set up. I start with a magnification of 102X which to some is a medium magnification. The EP is 82 degree. Yet I still have to mow the lawn to some extent because I'm looking at a star chart and aiming the laser at an approximate spot in the sky, many times without nearby bright reference stars. That doesn't mean my finders are not dead on, that means I'm just aiming at what I think is around the exact spot my chart shows. Dead reckoning. I may be off a tad. No big deal. Sometimes I'm dead on, sometimes I'm off a bit. Sometimes I may be dead on but the object is so faint I don't know it until I move the scope around and notice something wrong with the background. Most of the stuff I look for can't be seen in either my 50mm finder, which I don't use much, and definitely can't be seen with my laser. When you are eyeballing an approximate target, there is nothing wrong with starting low and working your way up. Properly aligning your finders goes without saying. I use the top of a mountain or a tower light or some distinct land feature before it gets dark. Once first light happens, I recheck things and make sure the object is centered.

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Tony Flanders
Postmaster
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Reged: 05/18/06

Loc: Cambridge, MA, USA
Re: What Finder Do You Use? new [Re: JayinUT]
      #5661479 - 02/04/13 10:41 AM

Oddly enough, I use a finderscope on the 12.5-inch Dob that lives at my country home, but not on the scopes that I use in the city -- where a finderscope would arguably be more useful.

This is really a matter of portability. My 12.5-inch Dob is already a monster; its 8x50 RACI finder is only a small addition. But the 7-inch Dob that lives in the city is already at the limit of what I can carry in a single load; I'm loath to add any more.

My 100-mm f/6 refractor actually came with a perfectly serviceable 6x30 finderscope, which I replaced with a red-dot finder. It fits better in the case, and somehow seems more aesthetically in keeping with this fairly small scope. Moreover, the scope has a monstrously huge field of view at 15X with my 40-mm wide-field eyepiece.

My 70-mm refractor actually has a smaller field of view because it takes only 1.25-inch eyepieces. Nonetheless I use a red-dot finder with it. Any kind of finderscope, or even a Telrad, would really crimp this scope's portability.

I do often consider adding a finderscope to my 7-inch Dob in addition to the Telrad that I currently use on it. Although this scope has a nice big 2.5-degree field of view, that still leads to pretty long star-hops when my target is 15 degrees from the nearest naked-eye star -- which happens fairly often in some parts of the sky when observing from a city park. A finderscope would definitely be a time-saver. A 6x30 RACI would probably be ideal; I don't see any virtue in an 8x50 finderscope for this particular telescope.

On my 12.5-inch Dob, the 8x50 finderscope is a huge time-saver. For bright objects like M51, I don't refer to my charts at all -- just use the red-circle finder to get in the right part of the sky (which I know by heart), center M51 up in the finderscope, and switch to the main eyepiece.

For faint objects involving intricate star-hops, the 8x50 finderscope gets me quickly to the correct square degree of sky before I start the serious work at the main eyepiece. These objects are typically invisible at low power through the main scope, so they involve a four-step process -- go to the nearest naked-eye star with the red-circle finder, star-hop to the correct square degree with the finderscope, star-hop to the correct 10' field with the low-power eyepiece, and then switch in high power and start looking for real.


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jeff5341
newbie
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Reged: 12/06/12

Loc: North Carolina
Re: What Finder Do You Use? new [Re: JayinUT]
      #5661498 - 02/04/13 10:46 AM

Red dot on my Nexstar 8X50 finder scope on my LX200.

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csrlice12
Postmaster
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Reged: 05/22/12

Loc: Denver, CO
Re: What Finder Do You Use? new [Re: jeff5341]
      #5661520 - 02/04/13 10:55 AM

Telrad and 9X50 RACI on the Dob; 9X50 RACI on the XLT.

Got a question. It appears the Orion finders are anondized like the OTAs (that bronze color). Can these be painted over with enamel, or are there places locally that could "reanondize" it. I would like to change the bronze color over to a blue/cream combination like the Omni scope colors. Any idea on how much it costs to reanondize it?


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smallscopefanLeo
sage
*****

Reged: 01/23/11

Re: What Finder Do You Use? new [Re: Sarkikos]
      #5662477 - 02/04/13 08:58 PM

Quote:

Randy,

Quote:

If you properly align your finder to the scope, you can use a medium or high power eyepiece and the object will be in the scopes FOV. I've done it with 7mm orthos in my dob and refractor. And, to be truthful, it doesn't take long to align a finderscope. A properly aligned finder can make the difference between a great night and a frustraiting one......




I have the suspicion that many if not most observers don't take the time to align their finders accurately. I find that what helps immensely is to put a crosshair eyepiece in the focuser of the main telescope while I'm aligning the finder. Position Polaris behind the crosshairs of that eyepiece and then adjust the Telrad and your optical finder. This extra bit of effort will pay you back manyfold when star hopping to objects.

Mike




This is excellent advice in my humble opinion. A cross-hair or reticle eyepieces is worth owning even if just for aiming purposes alone, but to be sure, their value shines on in so many other areas as well, such as getting a good center for goto precision and just plain finding the sweet spot for visual observing.


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weedbreeder
journeyman


Reged: 12/15/11

Re: What Finder Do You Use? new [Re: smallscopefanLeo]
      #5662557 - 02/04/13 09:52 PM

I use my celestron 70mm travelscope with RACI diagonal and 32mm omni ep as finder. My main scope is an Orion 120st. Usually, the camera is attached to the main scope. The main scope at f5 sees wider than the finder does at f7.5.

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leviathan
sage


Reged: 11/29/11

Loc: Azerbaijan
Re: What Finder Do You Use? new [Re: CelestronDaddy]
      #5670935 - 02/09/13 03:47 PM

I use Telrad and got used to it. Recently I found myself very uncomfortable without it on another similar scope of friend.

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GeneT
Ely Kid
*****

Reged: 11/07/08

Loc: South Texas
Re: What Finder Do You Use? new [Re: JayinUT]
      #5671130 - 02/09/13 05:58 PM

Telrad only. My telescope won't also take an optical finder. I recommend using both a Telrad and an optical finder.

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HellsKitchen
Pooh-Bah


Reged: 09/05/08

Loc: Melbourne Australia
Re: What Finder Do You Use? new [Re: GeneT]
      #5671352 - 02/09/13 08:09 PM

Stellarvue 60mm on my 12" Dob and an 8x50 RACI on the 8 incher. Both scopes also have a Telrad.

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