#21
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The 4 mm gives you a whopping magnification of x312 and that is pushing the 90 mm optics far to much in almost every case (and I have owned the ETX). The image will be very dark, incredible hard to get focused and because of the narrow field of view the object will move very fast. Also, if you have x312 every little touch on the telescope or the tripod will be magnified with that amount so it is very hard to follow the object or actually see it, because it only takes a little touch and it will take seconds for the vibrations to disappear. Try the 4mm on Saturn or Jupiter if you want to test it...That is, honestly, the only object it can work on, if your skies are perfect. And try to test it on a far away earthly object on the middle of the day. That will give you a pretty clear idea why it is almost impossible to use x312 with 90mm optics on stellar objects. And of course, don´t put the view near the sun because the intensity of the rays can make you blind. Last edited by MasterChief; 05-04-2015 at 02:18 PM. |
#22
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So if you were wanting more detail than the 26 which one would you use... I am an absolute neophyte. I also have a 9mm and a 2x Barlow
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Marantz( UD8004,AV8802a ), Oppo udp 203 JLAudio Fathom F-110, B&W( 802 series III , FCMS8, SCMS8) . WireWorld Eclipse 6 xlr(7) Sliver Eclipse 5.2 HDMI (3) electra 5.2 powercords . HRS Nimbus , lg 55 Oled Nvidia Shield PS Audio PPP System 2 Panasonic G25 Marantz av8003 |
#23
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First try the Barlow on your 26mm eyepiece. This will get you the equivalent of 13mm, twice the magnification of the 26mm. The advantage of a Barlow is the eye relief, the distance you need to keep your eye away from the eyepiece stays the same.
Then you can try the 9mm, which is approaching my the limit of what your scope can handle. A 4mm is useless, just provided so the marketing guys can advertise a high magnification.
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Main System: Amati Futura Mains Amati Homage VOX Center, Proac Response 1sc Rears, Three MC2301's for L,C,R MC 602 for the rears C 1100, MX 151, MCD 1100, MR 80 Nottingham Dais with Wave Mechanic Sumiko Palo Santos Presentation SurfacePro 3, RPi 4, ROON, WW Starlight Platinum USB, Schiit Yggdrasil, Benchmark DAC3 HGC MX 151, OppO BDP-95, JVC RS-500 DILA projector, 106" diagonal Stewart Luxus Screenwall Deluxe with Studiotek 130 G3 material. Lake House: Ohm F, MC 275V, C2300, MR 77, Rega P3 OnDeck: McIntosh MAC 4300v |
#24
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#25
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Can I use other eyepieces with the TX that are not Plossils? with higher magnification?
Also is getting a brands like televue worth it for this type of scope? Would better quality eyepieces make a difference with this scope?
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Marantz( UD8004,AV8802a ), Oppo udp 203 JLAudio Fathom F-110, B&W( 802 series III , FCMS8, SCMS8) . WireWorld Eclipse 6 xlr(7) Sliver Eclipse 5.2 HDMI (3) electra 5.2 powercords . HRS Nimbus , lg 55 Oled Nvidia Shield PS Audio PPP System 2 Panasonic G25 Marantz av8003 |
#26
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I strongly recommend Cloudy Nights Forum for a ton of great info about astronomy equipment. |
#27
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Astronomy can be very similar to high-end audio
Since a night in 1962 I got hooked on astronomy. Magnifying light can be much like reproducing and amplifying sound. Good optics are critically important. So, early exploration with an inexpensive telescope is great fun. But start applying really good optics and it just gets better and better. With today's telescopes, in particular refractors like a 4" or 5" Takahashi and some high quality eyepieces (think $600+) it becomes a whole new thing. Highly recommended.
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George Main: Aurender W20SE music streamer, ARC REF 9SE DAC / CD, Linn LP 12, Koetsu Rosewood SignCartrige, ARC REF 3 Phono Stage, ARC REF 6SE Preamp, ARC 160s amp, Sonus Faber Amati Traditional Speakers,Transparent Ultra IC & SC Library:Aurender N100, Ayre QB9 2020 DAC, Woo WA5-LE amp upgraded tubes, Focal Utopia HP, Sennheiser 800s HP, LCD HP. |
#28
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Pete No. 35 Main System: VPI Prime Signature TT in Rosewood, Ortofon Cadenza Black, Stillpoints LP1 V2, McIntosh: MP100, MR78, MCD1000 Transport on Stillpoint Ultra Minis, MDA1000 D/A Converter on Stillpoint Ultra Minis, MS750 Music Server, C40, MC501's (3), Soundcraftsmen: DC2215 Eq/AS1000 Real time analyzer, DBX 3BX II, Carver C9, Nakamichi Dragon, Crown SX724, Crown D-75A (as headphone amp), Sony XBR55X900E 4K TV, JBL L220A's, JBL B460, Sumo Delilah active crossover, WireWorld Silver Eclipse audio interconnects, WireWorld Starlight and Silver Starlight Coaxial Digital interconnects, Wireworld SuperNova 7 Toslink digital interconnect, WireWorld Aurora 7 and Silver Electra Power cords, Wireworld Silver Eclipse 8 speaker cables, Terk AF-1 Powered Antenna, Oppo UDP-205 4K Blu-Ray Player, Bryson BUC-1 USB Converter, Wireworld Gold Starlight XLR Digital interconnect, PS Audio Direct Stream Power Plant 12 on Stillpoint Ultra Minis, PS Audio Dectect, FuruTech Flux-50 NCF Inline Power Filter, Add-Powr Wizard EM Field AC Line conditioner; Stillpoint Ultra SS's under (3) McIntosh MC501 Amplifiers Florida Room/Art Studio System: Harmon Kardon T60 TT/Ortofon 2M Black, McIntosh: MR77, C32, MC2205; Crown Power Line Four, Wyred for Sound DAC-2 Digital to Analog converter, Soundcraftsmen AE2000 Eq, JBL 4313B's, JBL 2241-based Sub, JBL BX63A Active Crossover, Oppo BDP-105D Blu-Ray Player, Samsung 5500 Series 32" Smart TV, Terk AF-1 Powered Antenna Master Bedroom System: McIntosh: MX120 Theater processor, MC206 6-channel amplifier; MR74 AM/FM Tuner, Oppo UDP-203 4K Blu-ray player, JVC HM-DH40000U D-Theater Digital VHS, Phase Technology PC80 Towers (now used as stands), (2) JBL 4401's, (1) JBL Studio 6IW speaker, (2) JBL Studio 6IC speakers, Sony XBR-49X900E UHD TV, Panamax 1000 Line Conditioner, (2) JL Audio E110 Subwoofers, Wireworld Solstice speaker cables, Wireworld Aurora Power cords, Wireworld Equinox and Solstice speaker cables and various other flavors of Wireworld and Audioquest cabling Office System: Marantz 150 Tuner, Crown DL 2, Crown EQ 2, Crown SA 2, Crown D-75A (as headphone amp), McIntosh MCD7009 (as transport), DBX 3BX Series II, Oppo BDP-103 Blu-ray player, JBL 4401's, JL Audio E112 Subwoofer, Samsung 5500 series 32" Smart TV, Wire World Oasis audio interconnects, Wire World Solstice speaker cables, Wyred for Sound DAC-2 DSDse Digital to Analog converter, Wireworld Starlight Coaxial Digital Interconnect, Sennheiser HD800 Headphones, Sennheiser HDVA600 Headphone amp, Wireworld Silver Eclipse Balanced Interconnects, Wireworld Platinum Starlight USB Cable, Add-Powr EAU-2 AC Harmonic resonator High Resolution Source: HP Omen 17" Gaming Laptop |
#29
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Good optics are worth it.
Yep, and the mount needs to be just about as expensive. But, really worth it.
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George Main: Aurender W20SE music streamer, ARC REF 9SE DAC / CD, Linn LP 12, Koetsu Rosewood SignCartrige, ARC REF 3 Phono Stage, ARC REF 6SE Preamp, ARC 160s amp, Sonus Faber Amati Traditional Speakers,Transparent Ultra IC & SC Library:Aurender N100, Ayre QB9 2020 DAC, Woo WA5-LE amp upgraded tubes, Focal Utopia HP, Sennheiser 800s HP, LCD HP. |
#30
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Still cloudy a month after ....only one day of clear skies
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Marantz( UD8004,AV8802a ), Oppo udp 203 JLAudio Fathom F-110, B&W( 802 series III , FCMS8, SCMS8) . WireWorld Eclipse 6 xlr(7) Sliver Eclipse 5.2 HDMI (3) electra 5.2 powercords . HRS Nimbus , lg 55 Oled Nvidia Shield PS Audio PPP System 2 Panasonic G25 Marantz av8003 |
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