$10 - $15

BB4865-C Bromophenol Blue Indicator Solution, 0.04% w/v, 120mL by AquaPhoenix

• pH 3.0 (yellow) - 4.6 (blue)

Specifications

• Packaging Type: Poly
• Concentration: 0.04% w/v
• Size: 120 mL
• pH Value: 3.0-4.6

BG4120-C Bromcresol Green Indicator Solution 0.04% w/v, 120mL by AquaPhoenix

• pH 3.8 (yellow) - 5.4 (blue)

Specifications

• Packaging Type: Poly
• Concentration: 0.04% w/v
• Size: 120 mL
• pH Value: 3.8-5.4

93575 LensPen Optics Cleaning Tool by Celestron

How many times has dust or lint on your eyepiece or telescope ruined an observing session? One innocent-looking strand of hair strewn across the lens in your photos or astroimages can take hours of clean-up in a photo-editing program, and a greasy thumbprint or smudge on the optics can send an otherwise perfect image to the trash. Enter the Celestron LensPen, a dual function optical cleaning tool that is small and lightweight enough to stay in your telescope accessory case or camera bag so it will always be there when you need it.

The LensPen is two cleaning tools in one. One end contains a soft brush for removing dust and other particulates from any optical surface. The opposite end of the LensPen will handle the smudges and spots that cannot be brushed away. This tool has a special cleaning tip that works without the need for liquids, so it will never dry out. A cap protects the smudge removal tool when not in use, while the brush retracts safely inside the LensPen.

When cleaning optics, it is always best to use the brush first, even if you think it unnecessary. Carefully brush the entire surface, and when you are done, inspect your work. If you find any smears or spots, use the cleaning element to remove them, using a light touch.

The Celestron LensPen is a great tool for all of your optical equipment, including eyepieces, telescopes, spotting scopes, binoculars, microscopes, cameras, lenses, and more.

• Keep your optics clean with the innovative LensPen
• Use the soft retractable brush for removing loose particles & dust
• Clean smudges, fingerprints, pollen, and other sticky substances from the optics with the special cleaning element.
• No liquids are used...nothing to spill or dry out.
• The LensPen is safe and easy-to-use. Keep one handy for all your optics!

94037 Thermistor for Smart DewHeater Controllers by Celestron

Take the guesswork out of using third-party heating bands or straps and increase your power efficiency with the Celestron Thermistor for Smart DewHeater Controllers. This accessory allows the Smart DewHeater Controller (sold separately) to deliver just the right amount warmth for to your telescope's corrector to prevent dew without wasting battery. 6' cable length accommodates a wide variety of configurations.

How it works

Connect the heating band to your telescope and place the Thermistor's sealed probe tip under the heating band. Plug each cable into its corresponding port of the Smart DewHeater Controller.

NOTE: This thermistor is not required if you are using a Celestron Dew Heater Ring because the ring already contains a built-in thermistor.

Enhance your setup

We also recommend adding a dew shield to your setup. While not mandatory, a shield will cut down on the amount of power the your dew heater needs to keep the optics clear.

• Works in conjunction with Celestron's Smart DewHeater Controllers to allow "smart" control of third-party dew heaters
• Regulates heating bands or straps to conserve power by only delivering enough heat to the optics to prevent dew
• Sealed tip positioned under the heating band or strap provides accurate temperature readings

94119-A 1.25" Moon Filter by Celestron

The Moon has the distinction of being the most often viewed celestial object through backyard telescopes. It is undoubtedly beautiful and mysterious, and is one of those constants in our lives that connects us to every other being on our planet. Regardless of who we are or where we live or travel, we all look at the same moon.

It is difficult to look at the Moon through a telescope and see all of the details due to its brightness. Our eyes are not ready for the bright beam of light that emits from the eyepiece, and they "stop down", just as they would when you step out into the sunlight on a bright summer's day. When we're in the sunlight, we often wear sunglasses. They help us relax our eyes, protect us from glare, and help us see things more clearly. When amateur astronomers observe the Moon, we use a moon filter. A Celestron Moon Filter provides similar benefits to those of sunglasses...our eye relaxes and opens up to let us see more detail. This is especially important when observing the Moon when it is near full.

The Celestron Moon Filter simply screws onto the insert barrel of most 1.25" eyepieces. It only takes a second or two to transform your regular eyepiece into one suited for lunar observations. A Moon Filter is also helpful when observing Venus or bright terrestrial scenes. This filter is not suitable for viewing the Sun.