Bird Families

Dark Newtonia / Newtonia amphichroa


Mirror-lens scheme (Maksutov-Newton). Objective lens diameter: 190 mm. Focal length: 1000mm

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  • 190
  • Sky-Watcher
  • PRC
  • 3 years
  • 17.0 kg
  • 123.0 × 46.0 × 39.0 cm.

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    Sky-Watcher BK MAK190 Newtonian is an infrequent variation of a mirror-lens telescope. The optical tube, assembled according to the Maksutov-Newton scheme, although it consists only of spherical lenses and mirrors, does not show optical distortion, chromatism and coma. detailed description

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    Includes small or medium-sized birds (body length from 12 to 30 cm), in the plumage of which black, blue, white, brown or gray colors are contrastingly combined. The beak is strong, hooked. The wings are short or long, rounded, the tail is long. They inhabit forests and shrubs, feed on insects and other small animals (up to small lizards and frogs), which they catch among the branches. Nests are made on trees, 3-4 white or green eggs with brown spots are laid.

    Wangs are common in Madagascar, continental Africa, South and Southeast Asia.


    As of June 2018, the family includes 21 genera (many of which are monotypic) and 39 species:

    • Genus Artamella W. L. Sclater, 1924
      • Artamella viridis (Statius Müller, 1776) - White-headed painted wang
    • Genus Bias R. Lesson, 1831 - Singing Flycatchers
      • Bias musicus (Vieillot, 1818) - Singing Flycatcher
    • Genus Calicalicus Bonaparte, 1854 - Red-tailed Wangs
      • Calicalicus madagascariensis (Linnaeus, 1766) - Red-tailed wang
      • Calicalicus rufocarpalis Goodman, Hawkins & Domergue, 1997
    • Genus Cyanolanius Bonaparte, 1854
      • Cyanolanius madagascarinus (Linnaeus, 1766) - Blue painted wanga, or blue painted wanga
    • Genus Euryceros R. Lesson, 1831 - Helmet-billed wangs, or thick-billed wangs
      • Euryceros prevostii R. Lesson, 1831 - Helmet-bearing wang, or thick-billed wang
    • Genus Falculea I. Geoffroy, 1836 - Sickle-billed wangs
      • Falculea palliata I. Geoffroy, 1836 - Sickle-billed wang
    • Genus Hemipus Hodgson, 1844 - Flycatcher larvae
      • Hemipus hirundinaceus (Temminck, 1822) - Black-winged flycatcher larvae
      • Hemipus picatus (Sykes, 1832) - Bore-backed flycatcher larvae
    • Genus Hypositta A. Newton, 1881 - Red-billed Wangs
      • Hypositta corallirostris (A. Newton, 1863) - Red-billed Wang
    • Genus Leptopterus Bonaparte, 1854 - Painted wangs
      • Leptopterus chabert (Statius Müller, 1776) - Magpie painted wang
    • Genus Megabyas J. Verreaux & E. Verreaux, 1855 - Shrike flycatchers
      • Megabyas flammulatus J. Verreaux & E. Verreaux, 1855 - Shrike flycatcher
    • Genus Mystacornis Sharpe, 1870 - Mystacornis
      • Mystacornis crossleyi (A. Grandidier, 1870) - Mystakornis
    • Genus Newtonia Schlegel, 1867 - Newtonians
      • Newtonia amphichroa Reichenow, 1891 - Dark Newtonia
      • Newtonia archboldi Delacour & Berlioz, 1931 - Brown-fronted Newtonia
      • Newtonia brunneicauda (A. Newton, 1863) - Red-bellied Newtonia
      • Newtonia fanovanae Gyldenstolpe, 1933 - Fanovana Newtonia
    • Genus Oriolia I. Geoffroy, 1838 - Black Wangs
      • Oriolia bernieri I. Geoffroy, 1838 - Black Wang
    • Genus Philentoma Eyton, 1845
      • Philentoma pyrhoptera (Temminck, 1836) - Chestnut-winged monarch
      • Philentoma velata (Temminck, 1825) - Chestnut-breasted monarch
    • Genus Prionops Vieillot, 1816 - Spectacled Shrikes
      • Prionops alberti Schouteden, 1933 - Yellow-headed spectacled shrike, or yellow-headed shrike
      • Prionops caniceps (Bonaparte, 1850) - Red-bellied spectacled shrike
      • Prionops gabela Rand, 1957 - Red-billed spectacled shrike
      • Prionops plumatus (Shaw, 1809) - Long-crested spectacled shrike
      • Prionops poliolophus G. A. Fischer & Reichenow, 1884 - Gray-crested spectacled shrike
      • Prionops retzii Wahlberg, 1856 - Three-colored spectacled shrike
      • Prionops rufiventris (Bonaparte, 1853)
      • Prionops scopifrons (W. Peters, 1854) - Red-fronted spectacled shrike
    • Genus Pseudobias Sharpe, 1870 - Ward's Flycatchers
      • Pseudobias wardi Sharpe, 1870 - Ward's flycatcher
    • Genus Schetba R. Lesson, 1831 - Red Wangs
      • Schetba rufa (Linnaeus, 1766) - Red wang
    • Genus Tephrodornis Swainson, 1832 - Woody larvae
      • Tephrodornis affinis Blyth, 1847
      • Tephrodornis pondicerianus (J. F. Gmelin, 1789) - Brown-tailed arboreal grub
      • Tephrodornis sylvicola Jerdon, 1839 - White-browed arboreal larvae
      • Tephrodornis virgatus (Temminck, 1824)
    • Genus Tylas Hartlaub, 1862 - Bulbul Wangs
      • Tylas eduardi Hartlaub, 1862 - Bulbul Wang
    • Genus Vanga Vieillot, 1816 - Hook-billed wangs
      • Vanga curvirostris (Linnaeus, 1766) - Hook-billed wang
    • Genus Xenopirostris Bonaparte, 1850 - Narrow-billed wangs
      • Xenopirostris damii Schlegel, 1865 - White-fronted narrow-billed wang
      • Xenopirostris polleni (Schlegel, 1868) - Gray narrow-billed wang, or wang Pollen
      • Xenopirostris xenopirostris (Lafresnaye, 1850) - Common narrow-billed wanga, or desert narrow-billed wanga

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    • Description
    • Characteristics
    • Add. materials
    • Questions & Answers (1)
    • Reviews and testimonials

    Sky-Watcher BK MAK190 Newtonian is an infrequent variation of a mirror-lens telescope. The optical tube, assembled according to the Maksutov-Newton scheme, although it consists only of spherical lenses and mirrors, does not show optical distortion, chromatism and coma. A clear and contrasting picture is observed across the entire field of view, even at high magnifications. However, the payment for this is rather large dimensions and increased weight of the optical tube. Therefore, the Sky-Watcher BK MAK190 Newtonian optical tube is not very suitable for mobile observations. It is more focused on stationary use.

    Sky-Watcher BK MAK190 Newtonian is a versatile optical tube that shows impressive results in both visual observations and astrophotography. Crayford's two-speed focuser makes it easy to focus accurately and smoothly on subjects of interest. The optics collect light well, do not create internal reflections and minimize all major aberrations. The optical tube is aimed at demanding users of different skill levels.


    • Optical scheme of Maksutov-Newton
    • Spherical main mirror and aperture meniscus corrector
    • Minimal spherical aberration and chromatism, reduced coma
    • Crayford two-speed focuser, 2 "
    • Excellent choice for visual observation and astrophotography
    • Suitable for exploring the Moon, planets of the solar system and deep space objects

    Contents of delivery:

    • Optical tube
    • Fastening rings
    • Dovetail plate
    • Optical finder 8x50
    • T-adapter

    Telescope typemirror-lens
    Optical designMaksutov-Newton
    Objective lens diameter (aperture), mm190
    Secondary mirror diameter, mm64
    Lens shape (mirrors)sphere
    Focal length, mm1000
    Maximum useful magnification, times380
    Aperture ratio (relative aperture)f / 5.3
    Fitting diameter of eyepieces, inches2
    Seekeroptical, 8x50
    Focusertwo-speed Crayford, 2
    Dovetail mountthere is
    Pipe materialpowder coated steel
    Pipe dimensions, mm195x935
    Pipe weight, kg12,5
    User levelfor experienced, for beginners
    Objects of observationplanets of the solar system, deep space objects

    Total questions: 1

    Novel (2018-08-06 08:20):

    Hello! What mount can you put on?

    Species names in all available languages

    LanguageCommon name
    DutchGroene newtonia
    English, United StatesDark newtonia
    FrenchNewtonie sombre
    Japaneseホ オ ア カ ニ ュ ー ト ン ヒ タ キ
    Polishlemurka ciemna
    Slovakkrovinárka tmavá
    SpanishNewtonia oscura
    Spanish, SpainNewtonia oscura
    Swedishmörk newtonia
    TurkishEsmer nevtonya

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