Javascript Disabled Detected

You currently have javascript disabled. Several functions may not work. Please re-enable javascript to access full functionality.

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Reflectors

A forum for discussing Newtonian type reflecting telescopes (including Schmidt and Maksutov designs as well as Herschelian, Off-Axis, etc).

Seems Legit...

Posted by Ken Sturrock

Regarding the War in Ukraine

Posted by cbwerner

Please log in to post a topic

Topic	Stats	Last Post Info
Pinned Show us your non- dob Newtonian Started by Bonco , 18 Sep 2016 1 2 3 15 →	Hot 368 replies 207,007 views	photonhunter Today, 05:09 PM
Pinned How to Collimate your Newtonian Started by Vic Menard , 15 Feb 2008 1 2 3 59 →	Hot 1,469 replies 339,326 views	Vic Menard Today, 08:32 AM
Pinned SHOW US YOUR DOBSONIAN! **** Started by mattyfatz , 15 Jan 2014 1 2 3 70 →	Hot 1,739 replies 575,974 views	B. Hebert 24 Sep 2023
Pinned Premium Dob Builders Worldwide Started by cuzimthedad , 29 May 2023	0 replies 5,365 views	cuzimthedad 29 May 2023
Pinned Best of Reflectors Started by Tom L , 14 Apr 2004 1 2	30 replies 218,517 views	cuzimthedad 26 Feb 2022
A new general purpose observing instrument? Started by gnowellsct , Yesterday, 05:38 PM	21 replies 467 views	ABQJeff Today, 05:09 PM
What's happening to my telescope? Started by Santola , Today, 02:17 PM Reflector, Dob, Moon	19 replies 218 views	kgb Today, 04:56 PM
Debris on mirrors that only comes off with alcohol Started by MikeTelescope , Yesterday, 09:20 PM	11 replies 199 views	Inkie Today, 04:28 PM
When Did You Finally Go 12" or Up? Started by SNH , 19 Mar 2022 Dob, SCT 1 2 3 7 →	Hot 157 replies 10,719 views	Inkie Today, 04:17 PM
Encoder Protection Connection System board...? Started by gcs111 , Yesterday, 08:39 PM	5 replies 114 views	ButterFly Today, 03:32 PM
Advice on ordering a New Moon 22" f3.3 Started by skpark , Today, 12:27 PM	1 reply 116 views	a__l Today, 01:17 PM
Any Reflector "experts" in England? Started by Whereisclearsky , 23 Sep 2023 1 2	35 replies 506 views	Whereisclearsky Today, 01:02 PM
6” Reflector Started by spaceydee , 12 Sep 2023 1 2	41 replies 1,529 views	izar187 Today, 11:25 AM
New SharpStar 15028HNT - Initial impression with pics! Started by ImNewHere , 30 May 2019 1 2 3 19 →	Hot 465 replies 88,187 views	SimonW Today, 09:25 AM
To fan or not to fan…. Started by Kcbrett , 24 Sep 2023	19 replies 539 views	happylimpet Today, 08:34 AM
Real VISUAL performance on really fast ( F4 or F3.6 ) Dobsonians ? Started by Xe1zlgg2 , 08 Apr 2023 1 2 3 4	Hot 78 replies 3,319 views	Darren Drake Today, 08:16 AM
RCOS Telescopes - workable in the modern age? Started by MountainAir , Yesterday, 02:30 AM	3 replies 288 views	R Botero Today, 02:28 AM
Full frame vs aps-c Started by calypsob , 24 Sep 2023	11 replies 295 views	Dan_I Today, 12:26 AM
Cheapest coma corrector for ES 16"? (UK) Started by Whereisclearsky , 22 Sep 2023 1 2	38 replies 624 views	$Cheapest coma corrector for ES 16"? (UK) - last post by Oldfracguy$ Oldfracguy Yesterday, 09:43 PM
What material should I use for focuser cage? Started by Whereisclearsky , Yesterday, 05:20 PM	1 reply 104 views	walt r Yesterday, 08:34 PM
starsence application question Started by donald41 , Yesterday, 06:05 PM	0 views	ngc7319_20 Yesterday, 06:24 PM
Does anyone ever use this thing? (I don't know what its called) Started by astrodreamer , 26 Sep 2023	9 replies 456 views	TelescopeGreg Yesterday, 05:44 PM
Advice on Dobson. Started by paulsky , 25 Sep 2023 1 2	41 replies 878 views	Starman1 Yesterday, 01:56 PM
Small issue with ES 16" Dobsonian mount - how to fix? Started by Whereisclearsky , 22 Sep 2023	4 replies 231 views	Whereisclearsky Yesterday, 10:51 AM
ES Firstlight 10" f/5 First Impressions Started by Doug Culbertson , 19 Dec 2022 1 2 3 22 →	Hot 539 replies 20,374 views	Neanderthal Yesterday, 10:33 AM
How to collimate scope with uncommon spiders? Started by Whereisclearsky , 26 Sep 2023	2 replies 147 views	Whereisclearsky Yesterday, 10:32 AM
Explore scientific 16" losing collimation when tilting Started by Whereisclearsky , 22 Sep 2023	21 replies 406 views	Feidb Yesterday, 08:23 AM
Two Months with the Explore Scientific 10” Gen II Started by beecee , 17 Sep 2023 Dob, Explore Scientific and 1 more...	15 replies 424 views	RoofMonkey911 Yesterday, 05:56 AM
Orion XX14G measurements Started by Stargazer3236 , 15 Apr 2020	14 replies 851 views	diebetes 26 Sep 2023
What material to cover primary mirror? Started by Whereisclearsky , 22 Sep 2023	24 replies 354 views	seasparky89 26 Sep 2023
Orion StarBlast 6 vs Celestron StarSense Explorer 150mm f/5 Started by hlee , 16 Sep 2023 Reflector	8 replies 251 views	vtornado 26 Sep 2023
Sky-Watcher GoTo Dobsonian Quality? Other Advise? Started by Medic801 , 10 Sep 2023 1 2	34 replies 883 views	RoofMonkey911 26 Sep 2023
I bought the cheapest new reflector on eBay - Here's what I got Started by Tristatefans , 25 Aug 2023 Reflector 1 2	44 replies 1,731 views	Tristatefans 26 Sep 2023
Solid secondary cell collimation? Started by lakio , 23 Sep 2023	6 replies 292 views	lakio 26 Sep 2023
6" f5 Newt for imaging a good place to start? Started by 900SL , 23 Sep 2023	7 replies 276 views	900SL 26 Sep 2023
About those Dobsonian table top GOTOs... do they "track"? Started by starcruiser , 26 Sep 2023	2 replies 154 views	starcruiser 26 Sep 2023
Why does my primary mirror look like this and won't clear? Started by mpaul73 , 08 Dec 2019 1 2 3 4	Hot 85 replies 6,958 views	briansalomon1 25 Sep 2023
Cheshire won't fit?! Started by Whereisclearsky , 25 Sep 2023	10 replies 182 views	Spikey131 25 Sep 2023
Now 12" F5 Starsense Explorer made! Started by 25585 , 22 Sep 2023	5 replies 380 views	spongebob@55 25 Sep 2023
Dobsonian forum? Started by paulsky , 25 Sep 2023	3 replies 301 views	JamesDuffey 25 Sep 2023
You don't need a big car for a 12" solid tube! Started by SpaceyJake , 17 Sep 2023	24 replies 696 views	izar187 25 Sep 2023
Suboptimal primary mirror supports in commercial reflectors Started by Loren Gibson , 23 Sep 2023	7 replies 301 views	TOMDEY 24 Sep 2023
Telescope Bortle 9 Started by Envixity , 16 Sep 2023	11 replies 496 views	briansalomon1 24 Sep 2023
Newtonian upgrade advice Started by William Lewis , 21 Sep 2023	24 replies 597 views	$Newtonian upgrade advice - last post by Oldfracguy$ Oldfracguy 24 Sep 2023
Mirror box weight for 14" to 18" telescopes. Started by N3p , 12 Sep 2023 1 2	31 replies 722 views	RoofMonkey911 24 Sep 2023
Unfortunate things happen Started by Jethro7 , 02 Aug 2023 1 2 3 6 →	Hot 126 replies 5,344 views	Jethro7 24 Sep 2023
How to use Howie Glatter laser collimator & TuBlug Started by actuary616 , 14 Aug 2013 1 2	25 replies 10,302 views	Neptune 23 Sep 2023
Fli Atlas focuser lost position and can’t home Started by AndreaL , 23 Sep 2023	0 replies 88 views	AndreaL 23 Sep 2023
Edge Darkening? Started by astrogeek64 , 27 May 2023 1 2	35 replies 1,325 views	fmendes 23 Sep 2023
Explore Scientific 10" Truss Dob at Costco Started by jessebear , 17 Dec 2019 1 2 3 21 →	Hot 507 replies 48,618 views	carib75 23 Sep 2023