66-1102639 Mrc Filter 52MM 495/022

( Brand: B-w ), ( Manufacturer Part Number: 66-1102639 ), ( Part Type: Filter ), ( Filter Shape: Circular ), ( Filter Color: Yellow ), ( Mount Fitting: Threaded ), ( Filter Effects: Black White Contrast ), ( To Fit: Camera ), ( Filter Size: 52 Mm )

Review B W 52mm #495/022 Basic Yellow Mrc Filter

The **66-1102639 52mm 495/022 MRC (Multi-Refractive Coating) Filter** is a high-performance optical filter designed for astrophotography and advanced astronomical imaging, offering exceptional clarity and precision for capturing deep-sky objects with unparalleled detail. Engineered by renowned filter manufacturer **Astrodon**, this filter is specifically tailored for use with monochrome (CMOS or CCD) cameras, making it an indispensable tool for astrophotographers seeking to isolate narrowband emissions while minimizing unwanted light pollution and atmospheric interference. The **495/022 designation** indicates its narrowband passband centered at **495 nanometers**, which corresponds to the prominent **H-beta emission line** (486.1 nm) of ionized hydrogen, a critical wavelength for imaging nebulae like the North America Nebula (NGC 7000) and the Veil Nebula (NGC 6960). The **Multi-Refractive Coating (MRC)** technology ensures superior light transmission and minimal internal reflections, maximizing signal strength while maintaining razor-sharp contrast and reducing chromatic aberrations that can degrade image quality.

Constructed with **high-precision optical glass** and coated with proprietary **multi-layer dielectric coatings**, this filter achieves an impressive **optical density (OD) of 4.0**, effectively blocking over **99.9% of off-band light** including the damaging effects of city light pollution, moonlight, and atmospheric sodium vapor lamps while allowing only the desired narrowband emission lines to pass through. The **52mm diameter** makes it compatible with a wide range of telescopes and camera setups, including popular astrophotography rigs equipped with standard 2-inch (50.8mm) filter holders, though an adapter ring may be required for precise alignment. Its **edge-to-edge uniformity** ensures consistent performance across the entire optical surface, eliminating hotspots or vignetting that could compromise the integrity of long-exposure images.

Beyond its technical prowess, the **495/022 MRC Filter** is particularly valued for its ability to enhance the visibility of **emission nebulae** that emit strongly in the H-beta region, such as the **Pelican Nebula (IC 5070)** and the **Heart Nebula (IC 1805)**. When paired with a **5nm or 7nm H-beta filter** in a dual-narrowband imaging setup, it allows for the capture of both H-alpha and H-beta emissions in separate channels, enabling astrophotographers to create stunning **RGB or bi-color composite images** with vibrant, lifelike colors. The filter s **low internal scattering** and **high durability** make it suitable for both **on-axis and off-axis imaging**, ensuring reliability across a variety of observational conditions.

For serious astronomers and astrophotographers invested in pushing the boundaries of deep-sky imaging, the **66-1102639 52mm 495/022 MRC Filter** represents a premium investment in optical quality and performance. Its combination of **narrowband precision, high transmission efficiency, and robust construction** makes it a favorite among those seeking to extract the maximum detail from faint celestial objects while mitigating the challenges posed by light pollution. Whether used as part of a **narrowband imaging filter set** or as a standalone solution for H-beta imaging, this filter exemplifies the fusion of cutting-edge optics and astronomical innovation, empowering photographers to reveal the cosmos in breathtaking clarity.

The **66-1102639 52mm 495/022 MRC (Multi-Reflection Coating) filter** is a specialized optical filter designed for high-contrast astronomical imaging, particularly for deep-sky photography and planetary observation. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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The MRC coating significantly enhances contrast by reducing stray light and reflections, which is critical for imaging faint deep-sky objects like nebulae, galaxies, and star clusters. This results in crisper, more detailed images with less veiling glare.

The filter s design minimizes color fringing, which is especially useful for wide-field astrophotography where chromatic aberrations from lenses or telescopes can distort colors.

The 52mm thread makes it compatible with a wide range of astronomical cameras, adapters, and telescopes, including DSLRs, DSOs (Deep-Sky Cameras), and some planetary cameras. It can often be used with a T-ring adapter for DSLRs.

MRC filters are typically made from high-quality optical glass with precision coatings, ensuring longevity and consistent performance over time. The 66-1102639 model is manufactured by a reputable brand (likely Baader Planetarium, given the part number), known for robust construction.

While primarily designed for astronomical use, the filter s high-contrast properties can also benefit terrestrial photography in certain conditions, such as reducing glare in high-contrast scenes (e.g., landscapes with strong backlighting).

The filter is straightforward to install simply screw it onto your camera or telescope s adapter ring. No additional hardware is required for most setups.

Compared to other high-end astronomical filters (e.g., narrowband filters or specialized planetary filters), the MRC filter offers excellent value for its performance in enhancing contrast and reducing unwanted light.

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The MRC filter is **not a one-size-fits-all solution**. It is optimized for **high-contrast astronomical imaging** and may not provide noticeable benefits (or could even degrade image quality) for:

- Wide-field terrestrial photography without strong backlighting.

- Low-light conditions where contrast is already minimal.

- Imaging objects that don t require high contrast (e.g., bright planets like Jupiter or Saturn, where planetary filters or IR-cut filters might be more useful).

- Narrowband astrophotography (e.g., Ha, OIII, SII), where dedicated narrowband filters are required.

In some cases, the filter s aggressive contrast enhancement might make images appear overly "crisp" or artificially sharp, which could mask subtle details or introduce artifacts if not used with proper post-processing.

- If your camera or telescope uses a non-standard adapter (e.g., a camera with a larger sensor than the filter s effective diameter), you may need additional rings or spacers, which could introduce vignetting or misalignment.

- Some planetary imagers or high-speed cameras may not benefit from the filter s design, as it is not optimized for rapid video capture.

While affordable for astronomical standards, the MRC filter is a **specialized tool**. If you re primarily interested in terrestrial photography or other types of astrophotography (e.g., lunar/solar imaging), you might find other filters (e.g., UV/IR-cut, planetary, or polarizing filters) more useful.

New astrophotographers might need to experiment with exposure settings and post-processing to fully leverage the filter s benefits, as it can alter the dynamic range of captured images.

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The **66-1102639 52mm 495/022 MRC filter** is an excellent choice for **serious deep-sky astrophotographers** who prioritize high contrast, reduced stray light, and sharpness in their images. It is particularly valuable for:

- Imaging faint nebulae, galaxies, and star clusters.

- Reducing veiling glare from light pollution or internal reflections in telescopes.

- Enhancing the performance of apochromatic refractors or other high-quality optics where chromatic aberration is a concern.

- Casual astronomers or those primarily interested in lunar/solar or planetary imaging.

- Terrestrial photographers unless they specifically need high-contrast reduction in backlit scenes.

- Users who already have a collection of specialized filters (e.g., narrowband filters) for specific imaging targets.

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- You are an astrophotographer focusing on deep-sky objects (nebulae, galaxies, etc.).

- You use a telescope or lens prone to stray light or chromatic aberration.

- You want a cost-effective way to improve contrast without investing in more expensive narrowband filters.

- You have a 52mm camera adapter or can easily add one to your setup.

- Your primary interest is planetary imaging, lunar/solar photography, or terrestrial photography.

- You already own a dedicated narrowband filter (e.g., Ha) for deep-sky work.

- You are on a tight budget and could allocate funds to other essential astrophotography accessories (e.g., autoguiding, cooling for your camera, or a better mount).

- If you re unsure, test the filter on a few key targets (e.g., the Orion Nebula or Andromeda Galaxy) to see if the contrast improvement justifies the cost.

- Pair it with a **UV/IR-cut filter** (e.g., Baader Planetarium s UV/IR-Cut) if your camera lacks one, as this will further enhance image quality by blocking unwanted infrared light.

- For planetary imaging, consider a **planetary filter** (e.g., Baader Planetarium s 52mm planetary filter) instead.

In summary, the MRC filter is a **highly specialized but valuable tool** for the right astrophotographer. Its pros outweigh the cons for deep-sky imagers, but it s not a versatile enough solution for all photography needs.

Details:

The nano all-around protection on the filter glass also ensures increased scratch resistance and extremely fast, easy cleaning, providing a long life. This filter can also minimize the haze caused by bluish cast of daylight. This high-quality broadband coating is applied on both sides and enhances the optical imaging properties, allowing uniform increased transmittance across entire light spectrum to be achieved, with minimal physically induced remaining reflection. Bought it a while back from glazier camera in Seattle, only tried on once, never used outside, came with branded leather pouch, basically brand new, highlights, Increases Black-and-White Film Contrast, Effect Emulates Written #8 Filter, Darkens Green and Blue Tones, Lightens Yellow, Red, Warm Reduces Haze Daylight, MRC Coating, Resistance Scott Glass Construction, Brass Filter Ring, Cotton Lens storage Pouch, Features, This 52mm #495/022 Yellow Basic B W can be to increase image contrast when using black-and-white film.

B W MRC Basic filters are made with the exclusive Multi-Resistant Coating MRC nano premium coating technology. When using this filter, blue and green subjects are rendered in darker shades of gray while yellows, reds, other warm tones lightened, producing a more natural-looking outdoor look. The top knurling is re designed for enhanced gripping. The slim filter ring design is compatible with wide-angle lenses an equivalent width of a 17mm full-frame lens.

part #: 661102639 prices

• $40.00-$79.80

specifications filtecam:

• brand: B-w
• mpn: 66-1102639
• part type: Filter
• filter shape: Circular
• filter color: Yellow
• mount fitting: Threaded
• filter effects: Black White Contrast
• to fit: Camera
• filter size: 52 Mm

payments filtecam:

• money order
• credit card: Diners-club
• other
• wallet: Google-pay

seller filtecam:

• # reviews: 123
• rating: 100.0%
• city: Seattle, Washington

returns filtecam:

• policy: No Returns

general filtecam:

• condition: Open box
• Cameras Photo > Lenses Filters > Filters

shipping filtecam:

• carrier: USPS
• cost: $7.95
• class: Standard
• transit: 4-10 Days
• type: Calculated
• service: USPS Ground Advantage

offer filtecam:

• availability: In Stock
• sold: 0
• best offers: True
• quantity: 1
• options: Ship-to-home
• started: March 29, 2026

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