In today's economy it's essential to get the most you can for your spending dollar. So there's no rationale to over pay for Tube Great when there are thousands of them for sale on eBay. Plus, eBay is one of the largest and most honest online shopping sites in the modern world. This site is authorized by eBay to help you find the Tube Great you are searching for and show them to you. If you don't see the Tube Great you are searching for below. Use the search feature on the right to find the kind you want.
I built a dobsonian telescope and I want to attach a finderscope to it. I know that usually finderscopes are attached to the tube, but I was wondering if I could attach it to the top of the tube box instead as I want to avoid drilling holes into the telescope tube. Everything is in great alignment and precision, so there's nothing to worry about there. I would just like opinion on where to mount the finderscope. Thanks!
Cool.
OK, so you have a box on the tube that is near the axis of rotation? Consider where your head is going to be, and how difficult it will be to keep it there. IMO, even the best designs often don't get this right.
One home made Newtonian Dob has a longer than required tube. The finder is mounted in front of the main eyepiece so that the 90 degree finder eyepiece is right next to the main scope eyepiece. That way you can go back and forth easily. I wonder if the owner is left eye'd or right eye'd.
I'm left eye'd. My finder scope is clearly mounted for right eye'd people. How would I fix it? I'd put the focuser on the right side of the tube and put the finder above it and slightly behind.
Which eye'd are you? Which eye goes to the eyepiece? That's all.
Amperex 12AT7 / ECC81 Orange Lettering Trio (3) matched Made in Holland, Two 6J5 Radio Vacuum Tubes -- N.O.S. RCA and G.E. (General Electric), Vintage Sherwood S-5500 II Stereo Tube Amp Amplifier Excellent Condition W/Cover, RARE 1956 HIGH FIDELITY MULLARD BLACKBURN 12AT7 ECC81 []Sq Amp Audio Vacuum Tube, Mullard EL34 by Phillips logo Nos Matched Quad Xf4 codes Blackburn Factory, RCA 12SA7GT 12SA7 Stereo Radio Amp Tube FOIL 1946 RARE!, One 50 watt tube amp output transformer, Audiophile or Guitar use, Vintage Old Tubes Rare Calculator, Regan Industries Model: RA900P from 1971, Schulmerich Electronis Tube Turntable Amplifier Model 50A-4 does not work, Very Strong Testing Mullard Metal Base EL34 (6CA7) Audio Output Tube, Matched Quad Premium Grade Psvane KT88-T Vacuum Tube in Gift Box Free shipping , Very Strong Testing Amperex Metal Base EL34 Guitar Audio Tube (6CA7), 2 Daven TubemixerAmp Vol Pots/Attenuators, 100Kohm , NR !!!!, V-AZ-118.1 RFT (DDR) MADE GLASS GEIGER MUELLER TUBE. NEW. LOT OF 1 V-AZ-118.1.., V-AZ-114NR - RFT (DDR) MADE GLASS GEIGER MUELLER TUBE. LOT OF 1 V-AZ-114NR., HIGH FIDELITY 1952 Raytheon JRP 6AK5 5654 6AK5W Matched Pair Amp Tube Little Dot, 12AT7/ ECC81- REALISTIC VACUUM RADIO TUBE, LOT OF 2- # 56 PHILCO, WARDS ENGRAVED RADIO TUBES, 6SN7 GTA- GENERAL ELECTRIC RADIO TUBE NOS, Tungsram ECC83 tubes / E83CC 12AX7 ECC803S 5751 7025 / tested, emission 100%, VINTAGE CRAFTSMAN RC-20 RC200 TUBE TELEVISION CHROMED NEEDS LITTLE WORK, Amperex Bugle Boy France EF86 6267 Audio Preamp Tube, 1963 RCA SHT Gray Plate 12AT7 ECC81 Preamp Tubes, Amperex Tung-Sol France EF86 6267 Audio Preamp Tube, 4 Good Strong Tung Sol 6550 Guitar Audio Tubes Tested Matched Date Codes!, NEW octal socket saver for6V6 6L6 EL34 6SN7 VacuumTubes, Fisher 500-C Vintage Tube Amplifier Receiver, Excellent Testing Amperex Metal Base EL34 Guitar Audio Tube (6CA7) , Aiwa Excelia XK-009 3 Heads DBX Stabilizer CD Direct Side Panels Very High End , NOS Testing Amperex Metal Base EL34 Guitar Audio Tube (6CA7), The Fisher X-101 Stereo TUBE Amp Ad from 1959, UTC Tube Amplifier Ad,1954, MLF, Specs, Article, Scott 345 TUBE Receiver Ad from 1964, specs, NICE!, 2 pcs NIB E83CC matched Tesla Gold pin 12AX7 1978 ECC803S superb guitar hi end, 10PCS NOS PHILIPS MULLARD CHICLET CAPS 0.022UF 22NF HQ CAP !, 4x PHILIPS 1uF 160V MKP MKP379 CAPS FOR HI-END TUBE AUDIO!, RARE RECTIFIER TUBE GERMAN VINTAGE VALVO TYPE UY 11 / UY-11 / UY11 JEJA A1J NOS, D3a / E810F / 7788 / RUSSIAN 6J52P / 30 NEW NOS!!! =Golden Grid=, Vintage The Fisher 800C Stereo Tube Receiver, Beautiful VALVO 12ax7/ecc83 early 50s LongPlates Foil getter copper posts!DM MCP, ~~~~~~~ Mullard GZ34/5AR4 Pair ~~~~~~~, ~~~~~~~ Mullard EL34/6CA7 Pair Double getter ~~~~~~~, GEC KT21 RARE BRITISH 1950'S MADE TUBE WITH TOP GETTERS - FACTORY CODE NO RF-Z, VINTAGE 1950s ZENITH OLD SHORTWAVE ANALOG MULTIBAND EXCELLENT TRANSOCEANIC RADIO, 26 TOTAL VACUUM TUBES 6201 12AT7 ECC81 6 GE JAN, 16 GE 5 STAR, + MISC OTHERS, RUBY WINGED -C- Matched EL34 TUBES NO RESERVE!, VINTAGE 1920s OLD ATWATER KENT GREAT MODEL 10 BREADBOARD RADIO WITH BOTTOM TAGS, Pre-War Truetone radio D-724 Original Finish-Restored to excellent playing cond., Very rare 1964 Sansui TU-70 AM/FM/Stereo Tube Tuner - near mint condition, Finest Custom Vintage MAGNAVOX Single Ended EL84 Tube Amplifier w/Mullards, Single Mullard Master 10M 7247 12DW7 Tube *Tested*, NEW VINTAGE CLINTON ELECTRONICS TUBE IN BOX MONITOR TV REPLACEMENT CRT RARE, VTG RCA Radiotron Electron Vacuum Tube NOS in Box Part No. 6BN4A, Single Mullard Master 10M 6BQ5 EL84 Power Tube *Tested*,
NOS NIB Mullard EZ35 6X5 Rectifier Tube, 4 RCA 12AU7A TUBES CLEAR TOPS #D93, VINTAGE OLD 1940s WESTINGHOUSE BAKELITE & TOP TO BOTTOM BRASS TRIM TUBE RADIO !!, 4 NOS SYLVANIA JAN CHS 6SN7W TUBES N.I.B. #D99, BRIMAR 12AT7/ECC81 VALVE LOT OF QUALITY TESTED VINTAGE BRITISH TUBES , VINTAGE 1930s OLD RCA VICTOR MID CENTURY MACHINE AGE GREAT ART DECO TUBE RADIO !,