{"id":449,"date":"2025-03-12T10:27:47","date_gmt":"2025-03-12T10:27:47","guid":{"rendered":"https:\/\/www.starhunter.com.my\/en\/?page_id=449"},"modified":"2026-06-10T10:47:13","modified_gmt":"2026-06-10T10:47:13","slug":"astrofilters","status":"publish","type":"page","link":"https:\/\/www.starhunter.com.my\/dreamskyen\/astrofilters\/","title":{"rendered":"Astrofilters"},"content":{"rendered":"

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Dreamsky Astrolab<\/span><\/div>[vc_empty_space height=”26px”]
Custom BCF Astro Filters for Astromod<\/span><\/div>[vc_empty_space height=”36px”][vc_row_inner row_type=”row” type=”grid” use_row_as_full_screen_section_slide=”no” text_align=”center” css_animation=””][vc_column_inner][vc_column_text]<\/p>\n

The Baader Conversion Filter (BCF) is an astronomy filter that effectively blocks infrared light above 700nm and ultraviolet light below 400nm. At the same time, it significantly improves transmission across the visible spectrum (400\u2013700nm), making it more suitable for both nightscape and deep-sky astrophotography.<\/h3>\n

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DREAMSKY BCF PRO Filter<\/span><\/div>[vc_empty_space height=”16px”][vc_column_text]<\/p>\n

DreamSky astromodification uses the dedicated DREAMSKY BCF Filter series for replacement. In addition to the standard version, a higher-end DREAMSKY BCF Pro version is also available, offering advanced specifications such as F11\u2013F16 cleanroom-grade production with zero dust and zero defects, as well as an ultra-optimized version designed for improved star shapes and reduced halos.Since the BCF astronomy filter must be installed in front of the sensor, the original factory UV\/IR cut filter must first be removed before the replacement and installation process can be carried out.<\/p>\n

[\/vc_column_text][vc_empty_space height=”16px”][vc_column_text]The factory UV\/IR cut filter in most cameras is designed primarily to ensure accurate color reproduction for general photography. However, its transmission within the visible spectrum is not always optimal, with some attenuation occurring in certain wavelength ranges, particularly near the deep-red region that is important for astrophotography. In addition, cameras equipped with a low-pass filter may experience a slight reduction in image sharpness and fine-detail resolution, which is less desirable for nightscape and deep-sky imaging.[\/vc_column_text][vc_empty_space height=”16px”][vc_column_text]By comparison, a BCF astronomy filter effectively blocks infrared light above 700nm and ultraviolet light below 400nm, while maintaining higher transmission across the visible spectrum (400\u2013700nm). This significantly improves light-gathering efficiency for both nightscape and deep-sky astrophotography. For everyday photography, natural color balance can be restored through a custom white balance setting.[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_empty_space height=”36px”][vc_row_inner row_type=”row” type=”full_width” use_row_as_full_screen_section_slide=”no” text_align=”left” css_animation=””][vc_column_inner width=”1\/3″][vc_single_image image=”681″ img_size=”full” qode_css_animation=””][\/vc_column_inner][vc_column_inner width=”1\/3″][vc_single_image image=”738″ img_size=”full” qode_css_animation=””][\/vc_column_inner][vc_column_inner width=”1\/3″][vc_single_image image=”814″ img_size=”full” qode_css_animation=””][\/vc_column_inner][\/vc_row_inner][vc_empty_space height=”36px”][vc_row_inner row_type=”row” type=”full_width” use_row_as_full_screen_section_slide=”no” text_align=”left” css_animation=””][vc_column_inner][vc_column_text]The H-alpha (Ha) emission line at 656.3nm is one of the most important wavelengths in astrophotography. Many emission nebulae glow brightly in H-alpha as hydrogen atoms, excited by high-energy radiation, release light at this specific wavelength when they return to a lower energy state.In deep-sky imaging, H-alpha reveals the most active and densely ionized regions of a nebula, making it a key wavelength for capturing nebular structure, fine detail, and stellar nurseries. While a stock camera filter typically transmits only around 25% of H-alpha light, a professionally astromodified camera can achieve transmission rates of up to 98%, significantly improving imaging efficiency and nebular detail.[\/vc_column_text][vc_empty_space height=”16px”][vc_column_text]In addition, because ultraviolet, visible, and infrared light have different refractive properties, the DreamSky BCF Pro UV\/IR cut filter helps minimize star bloat and halo effects caused by out-of-focus wavelengths. The result is tighter, sharper star profiles and cleaner overall image quality.[\/vc_column_text][vc_empty_space height=”36px”]

At DreamSky, we exclusively use premium custom astronomy filters from internationally trusted manufacturers, combining exceptional optical quality, advanced coatings, and precise spectral transmission to deliver the highest standards in astrophotography performance.<\/span><\/div>[vc_gallery type=”image_grid” images=”722,569,568,572,821″ img_size=”full” onclick=”” column_number=”5″ grayscale=”no” space_between_images=”yes”][vc_empty_space height=”16px”][vc_column_text]Starhunter astromodification utilizes industry-leading custom astronomy filter solutions, specifically optimized for nightscape and deep-sky imaging. Featuring professional-grade optical coatings, high-transmission design, and exceptional filter cleanliness, these filters significantly enhance the capture of nebular and deep-sky signals while maintaining superior image quality.We are committed to providing astrophotographers with professional astromodification filter solutions that deliver outstanding performance, quality, and reliability.[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_empty_space height=”36px”][vc_row_inner row_type=”row” type=”full_width” use_row_as_full_screen_section_slide=”no” text_align=”left” css_animation=””][vc_column_inner width=”1\/3″][vc_single_image image=”800″ img_size=”full” qode_css_animation=””][vc_empty_space height=”16px”][vc_column_text]Unlock the Hidden Colors of the Universe[\/vc_column_text][\/vc_column_inner][vc_column_inner width=”1\/3″][vc_single_image image=”797″ img_size=”full” qode_css_animation=””][vc_empty_space height=”16px”][vc_column_text]Up to 98% H-alpha (Ha) Transmission[\/vc_column_text][\/vc_column_inner][vc_column_inner width=”1\/3″][vc_single_image image=”801″ img_size=”full” qode_css_animation=””][vc_empty_space height=”16px”][vc_column_text]Minimizes Star Bloat and Halo Effects[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_empty_space height=”36px”][vc_row_inner row_type=”row” type=”full_width” use_row_as_full_screen_section_slide=”no” text_align=”left” css_animation=””][vc_column_inner]
Types of Astromodification<\/span><\/div>[vc_empty_space height=”16px”][vc_column_text]There are several common types of astromodification available today, each optimized for specific imaging needs and astrophotography applications.[\/vc_column_text][vc_empty_space height=”16px”][\/vc_column_inner][\/vc_row_inner][vc_row_inner row_type=”row” type=”full_width” use_row_as_full_screen_section_slide=”no” text_align=”left” css_animation=””][vc_column_inner width=”1\/2″][vc_single_image image=”814″ img_size=”full” qode_css_animation=””][vc_empty_space height=”16px”]
1. BCF Astromodification<\/span><\/div>[vc_empty_space height=”16px”][vc_column_text]<\/p>\n

This solution replaces the stock camera UV\/IR cut filter with a BCF astronomy filter that closely matches the original optical thickness, ensuring the camera\u2019s flange focal distance remains essentially unchanged after modification. It offers several key advantages:<\/p>\n

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