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Astrodon Tru-Balance I-Series Filters
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FLI - Microline Liquid Cooling Option with Double Shut-Off
FLI - Microline Liquid Cooling Option with Double Shut-Off ... Learn More
FREE SHIPPINGModel#: LC-DS(48 States)
$389.00 -
Lunt Solar Systems 100mm H-Alpha Filter - w/ B1800 for 1.5" Focusers
The new Lunt Solar Systems LS100 Hydrogen-Alpha Filter incorporates a unique design feature ... Learn More
Model#: LS100FHa1_B1800
$5,744.00 -
TeleGizmos Standard Solar Scope Cover for Meade 12" LightBridge Dobsonian
The new TeleGizmos Solar Telescope Cover is made from multi-layer ... Learn More
Model#: TGLB-12
$89.00 -
Astrodon - 50mm Gen 2 Unmounted Square G' Filter
Astrodon's new improvements of photometric Sloan filters generation 2 feature excellent out of band clocking and other edge-blackended compounds to reduce stray light reflections to assist in CCD imaging.
... Learn MoreFREE SHIPPINGModel#: g'2-50S(48 States)
$390.00 -
Astronomik - Dark Filter - 1.25"
Do you have a CCD camera without a mechanical shutter and would like to do dark frames without continually monitoring your equipment?
... Learn MoreModel#: DARK-1
$39.95 -
Borg - 77 ED II f/4.3 Astrograph Set (2178 + 7135 + 7835 + 7704)
- BORG 77EDII OTA
- 0.65x reducer
- Total of 6 elements
- 330mm focal length
- F4.3
- 35mm full-frame coverage
FREE SHIPPINGModel#: B07743(48 States)
$2,175.00 -
carbon12 - Celestron NexStar / CGE RS-232 Serial Cable (Coiled) for Sky-Fi & StarSeek
Avoid extra cables and RS-232 plugs by using the Custom Celestron CGE, made specifically for using SkyFi & Starseek Wi-Fi setup with the Celestron NexStar Hand Controller. ... Learn More
Model#: CGE-SFC
$32.95 -
carbon12 - Meade ETX, LX – RS-232 Serial Cable for Sky-Fi and Starseek
Avoid extra cables and RS-232 plugs by using the Custom Meade ETX Series, LX-90, LXD55/75 to Sky-Fi Serial Cable. This cable is made specifically for using a Sky-Fi or Starseek Wi-Fi setup with the Meade ETX-90AT, Meade ETX-105AT, Meade ETX-125AT, LXD55/75 and LX-90 telescopes utilizing the AutoStar 497 Handset. ... Learn More
Model#: ETX-SFC
$32.95 -
carbon12 - ServoCAT & ServoCAT Jr. – ( Straight 18") RS-232 Serial Cable for Sky-Fi and Starseek
Avoid extra cables and RS-232 plugs by using the Custom ServoCat to Sky-Fi Cable, made specifically for using Sky-Fi & Starseek Wi-Fi setup with ServoCat Gen 1 & 2 using Argo Navis© GoTo. ... Learn More
Model#: ServoCAT-S
$32.95 -
carbon12 - ServoCAT & ServoCAT Jr. – (Coiled) RS-232 Serial Cable for Sky-Fi and Starseek
Avoid extra cables and RS-232 plugs by using the Custom ServoCat to Sky-Fi Cable, made specifically for using Sky-Fi & Starseek Wi-Fi setup with ServoCat Gen 1 & 2 using Argo Navis© GoTo. ... Learn More
Model#: ServoCAT
$34.95 -
carbon12 - Starmaster RS-232 Serial Cable (Coiled) for Sky-Fi and Starseek
Avoid extra cables and RS-232 plugs by using the Custom Starmaster to Sky-Fi Cable. The one cable made specifically for using Sky-Fi & Starseek Wi-Fi setup with Starmaster using StarTrack and Sky Commander GoTo. ... Learn More
Model#: SM-SFC
$32.95 -
carbon12 - Starmaster RS-232 Serial Cable (Straight) for Sky-Fi and Starseek
Avoid extra cables and RS-232 plugs by using the Custom Starmaster to Sky-Fi Cable. The one cable made specifically for using Sky-Fi & Starseek Wi-Fi setup with Starmaster using StarTrack and Sky Commander GoTo. ... Learn More
Model#: SM-SFS
$32.95 -
carbon12 - Takahashi RS-232 Serial Cable for Sky-Fi and Starseek
Avoid extra cables and RS-232 plugs by using the Custom Takahashi to Sky-Fi Cable. The one cable made specifically for using Sky-Fi & Starseek Wi-Fi setup with Takahashi Mounts: EM-200, EM-200 Jr., EM11, NJP, EM400 & EM500. ... Learn More
Model#: TAK-SFC
$59.95 -
Explore Scientific - 127mm f/6.5 Achromatic Refractor OTA with Accessories
... Learn More
FREE SHIPPINGModel#: DAR127065-00(48 States)
$649.99 -
Explore Scientific - AR152 f/6.5 Air-Spaced Doublet Achromat Refractor
The AR152 (six-inch), with its larger aperture optics gathers 44% more light over the AR127 (five-inch) model, providing much brighter images and higher resolution
... Learn MoreFREE SHIPPINGModel#: DAR152065-00(48 States)
Regular Price: $1,120.00
Special Price: $749.00
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Explore Scientific - AR152 f/6.5 Air-Spaced Doublet Achromat Refractor,
The AR152 (six-inch), with its larger aperture optics gathers 44% more light over the AR127 (five-inch) model, providing much brighter images and higher resolution ... Learn More
FREE SHIPPINGModel#: DAR152065-00(48 States)
Regular Price: $1,120.00
Special Price: $749.00
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Levenhuk - C1400 NG 14 Mpx Digital Camera, USB 2.0
Levenhuk C1400 NG is a very powerful 14-Mpx digital camera for microscopes; it is capable of capturing sharp and saturated images in true color.
... Learn MoreFREE SHIPPINGModel#: 35957(48 States)
$549.95 -
Opticstar - Optimum ONE - D80S Gold DS
80mm f/6.5 ED Fluorite Doublet optics, dual speed Crayford focuser. ... Learn More
FREE SHIPPINGModel#: D80S(48 States)
$799.00 -
TeleGizmos - Standard Solar Cover for 14" SCT's on Alt-Azimuth Fork Mounts
The new TeleGizmos Solar Telescope Cover is made from ... Learn More
Model#: TG14
$57.00 -
TeleGizmos - Standard Solar Cover for 14" SCT's & Maks on a German Equatorial Mount
The new TeleGizmos Solar Telescope Cover is made from multi-layer ... Learn More
Model#: TGG2
$62.00
Astrodon Tru-Balance RGB filters have revolutionized CCD imaging. Their popularity is due to ease-of-use, high optical throughput and great resulting color for galaxies, star clusters and nebulae. There are two varieties of Tru-Balance filters - E-Series and I-Series.
I-Series filters are designed to approximately equalize the flux of Kodak's Interline CCD detectors, including compensation for the solar photon flux. This means that your RGB color combine weights will be approximately 1:1:1 within perhaps 10%. This can never be perfect, but it does allow you to take equal time exposures for your RGB data and also just one corresponding dark exposure time.
- 1.25" mounted and 50.4mm diameter
- ~1:1:1 color combine weights for G2V white-point for Kodak Interline detectors (patent pending)
- Equal RGB exposures and one dark time
- Better color separation
- Better color rendition of galaxies based upon color theory
- Significant reflection and star halo reduction
- Enhanced contrast for HII regions in galaxies
- Small spectral "gap" to minimize effect of light pollution
- Highest efficiency blue filter with less UV
- Correct "teal" OIII color for planetary nebula
- More parfocal - thickness 3+/-0.025 mm
- Parfocal with Astrodon's high-performance narrowband filters
- Striae-free 1/4 wave fused silica substrates
- 30 arcsec parallelism
Ultra-hard and durable sputtered coatings Astrodon filters are known for being parfocal on most systems. The new thickness tolerance of +/-0.025mm (25 microns) for Generation 2 LRGB fitlers is a factor of 2 better than Gerneration 1 filters, and should be parfocal for systems down to f/3.5, IF your optical system is well color corrected. We have reduced the UV contribution in the lumincance and blue filters for this reason to reduce star bloat The Clear (no near-IR blocking) may produce bloated stars if your optical system has poor near-IR focus. Use the near-IR-blocked Luminance filter in this case. The Clear filter is likely a better choice for reflectors, such as Ritchey-Cretiens, rather than refractors or camera lenses. Halo elimination results from a pioneering design that places both the bandpass layer and the blocking layer on one side of the 1/4-wave substrate and a high performance anti-reflective coating on the other side. As a result there is virtually no internal reflection between these surfaces that can cause halos around bright stars in other filter brands. M45 is one of the most demanding of targets that often leads to halos around bright stars.
